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Forrest Mims: Maverick Scientist
permalink #101 of 128: Forrest Mims (fmims) Fri 31 May 24 20:17
permalink #101 of 128: Forrest Mims (fmims) Fri 31 May 24 20:17
Several years ago I spoke with a National Science Foundation program officer about a possible grant. She bluntly told me that my proposal would not be considered if it did not include a climate change angle. I never announce or hint at results before beginning a project. My science has only one agenda: collect and publish the best possible data irrespective of what the data shows.
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Forrest Mims: Maverick Scientist
permalink #102 of 128: POOR TASTE IN KISS-WRITING (jswatz) Fri 31 May 24 21:10
permalink #102 of 128: POOR TASTE IN KISS-WRITING (jswatz) Fri 31 May 24 21:10
Thank you, Emily, for pointing out that Heritage is not a credible source. As for Roy Spencer, well, I don't want to derail the conversation (again) when the discussion of Mr. Mims' book is so interesting. But I do recommend reading this entry at realclimate.org that picks apart Spencer's Heritage piece specifically. His work does not hold up under expert scrutiny. <https://www.realclimate.org/index.php/archives/2024/01/spencers- shenanigans/> The piece comes from Gavin Schmidt, who heads NASA's Goddard Institute for Space Studies. Smart guy.
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Forrest Mims: Maverick Scientist
permalink #103 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 11:01
permalink #103 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 11:01
The Heritage Foundation was in the news yesterday for flying the American flag upside down outside their office in protest of the Trump conviction. Lest you think they're a credible institution.
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Forrest Mims: Maverick Scientist
permalink #104 of 128: Forrest Mims (fmims) Sat 1 Jun 24 11:16
permalink #104 of 128: Forrest Mims (fmims) Sat 1 Jun 24 11:16
Only a few days remain for this discussion of my new memoir, Maverick Scientist. So, I will next close my response to climate change, which is not a key part of the memoir, and evolution, which initiated the Scientific American affair, with two posts and then return to the memoir as suggested by Emily. First climate change: Water vapor is the principal greenhouse gas. I stand by my 34 years of highly stable column water vapor measurements (1990 to yesterday), the longest since the Smithsonian APO measured the same parameter from 1926 to 1957 at Table Mountain, California. They and I found no trend in the data. The Smithsonian data and my first 30 years were subjected to strict peer review and published in prominent journals of science. Modelers, the IPCC, and some InkWell folk need to better understand the role of water vapor in the climate system. For example, water vapor produces clouds that regulate the passage of sunlight through the atmosphere. This alone is why the IPCC should give significant attention to the distribution of column water vapor around the planet and the absence of long term trends reported in the scholarly literature. I close with Lesson One: Climate Change: (1) Real Measurements vs (2) Historical Observations (1) REAL MEASUREMENTS I calibrated my many atmospheric instruments at Hawaiis Mauna Loa Observatory (MLO) from 1992 to 2018. The 2022 eruption of Mauna Loa blocked the access road, and I have been unable to return. During my 235 days and nights at MLO, I often sat before Charle Keelings ancient CO2 monitor and watched as its chart recorder scribbled on an old chart recorder the concentration of CO2 in the air sucked inside the original MLO building through a tube mounted atop the 120-feet tall sampling tower. The Keeling record of increasing CO2 became a key factor in the study of climate warming. His measurements began in 1958, and I provide a detailed history of them in Hawaiis Mauna Loa Observatory: 50 Years of Monitoring the Atmosphere (University of Hawaii, 2012, 463 pp), a scholarly, peer-reviewed work that includes previously unpublished information about Keeling from his letters (with his sons permission) and interviews with MLO technicians. (NOAA funded my work on this major book.) Shortly before the dedication of the first MLO building in 1956, two astronomers and their wives became the first scientists to make observations from MLO. Their primary goal was to measure the water vapor over Mars. MLO was an ideal location, due to the very dry air at 11,200 feet. Shortly after Keelings measurements of CO2 were begun at MLO in 1958, a Foskett total water vapor instrument was installed near the original MLO building. This instrument was moved to various locations, and its descendants were mounted on the solar platform atop the new NDSC building in 1997. After some 40 years, the Foskett instrument was replaced by a modern water vapor instrument of very similar design. These instruments accurately determine total column water vapor from the surface to the stratosphere from the ratio of sunlight at a wavelength of light not absorbed by water vapor (typically near 880 nm) to a nearby wavelength strongly absorbed by water vapor (940 nm). (My personal water vapor instruments follow this approach.) A 1985 analysis of total water vapor from 1978 to 1983 by Ellsworth Dutton showed no trend in water vapor over MLO. Over the years, only a few papers have described the total water vapor measured over MLO. Various instruments and a GPS receiver have supplemented the updated Foskett device. But I am unaware of any publication describing the water vapor trend at MLO since 1958. While writing the MLO history book, I discussed this highly significant, long-term missing record of column water vapor with Dr. Dutton, who then had many other responsibilities. My impression was that NOAA was not funding a long-term water vapor study since (1) prior brief studies showed no trend and (2) measurements of CO2 and other human influenced greenhouse gases were considered more important than water vapor and therefore received considerable funding. I cover this topic in some detail in the MLO book (see pp. 438-441). (2) HISTORICAL OBSERVATIONS: Of the many examples, here is one thats especially relevant in view of what is described as unprecedented warming in the arctic: MONTHLY WEATHER REVIEW November, 1922. [p. 589] THE CHANGING ARCTIC. By GEORGE NICOLAS IFFT. [Under date of October 10 1922, the American consul at Bergen, Norway, Submitted the following report to the State Department, Wsshfngion, D. C.] The Arctic seems to be warming up. Reports from fishermen, seal hunters, and explorers who sail the seas about Spitzbergen and the eastern Arctic, all point to a radical change in climatic conditions, and hitherto unheard- of high temperatures in that part of the earth's surface. In August, 1922, the Norwegian Department of Commerce sent an expedition to Spitzbergen and Bear Island geology at the University of Christiania. Its purpose was to survey and chart the lands adjacent to the Norwegian mines on those islands, take soundings of the adjacent waters, and make other oceanographic investigations. The oceanographic observations have, however, been even more interesting. Ice conditions were exceptional. In fact, so little ice has never before been noted. The expedition all but established a record, sailing as far north as 89 degrees 29' in ice-free water. This is the farthest north ever reached with modern oceanographic apparatus. The character of the waters of the great polar basin has heretofore been practically unknown . it is of interest to note the unusually warm summer in Arctic Norway and the observations of Capt. Martin Ingebrigtsen, who has sailed the eastern Arctic for 54 years past. He says that he first noted warmer conditions in 1915, that since that time it has steadily gotten warmer, and that to-day the Arctic of that region is not recognizable as the same re ion of 1868 to 1917. Many old landmarks are so changed as to be unrecognizable. Where formerly great masses of ice were found, there are now often moraines, accumulations of earth and stones. At many points where glaciers formerly extended far into the sea they have entirely disappeared .
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permalink #105 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 12:07
permalink #105 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 12:07
Yes. Warming has been going on since the industrial revolution initialted burning large amounts of coal.
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permalink #106 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:21
permalink #106 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:21
<scribbled by gnolan Sat 1 Jun 24 12:24>
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Forrest Mims: Maverick Scientist
permalink #107 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:23
permalink #107 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:23
I have been a bit bemused by the resurrection of anti-evolution arguments here. Evolution is about as clear example of settled science as one can find. Rather than recapitulate the field and paleontology arguments, compelling as they are, its important to note the overwhelming evidence from molecular biology. Relationships between species and through eras are increasingly and clearly defined by molecular biological sciences. The mechanisms of genetic mutation are clearly evident, rooted in chance, and clearly fit the model of natural selection. There are some soft arguments related to "creation science" that I see rooted in adaptionism. In a lecture I attended by Stephen J Gould he saw this and the role of humans as the crown of creation as an attempt to arrest the Darwinian revolution. I am going to cite a good quote or two from <https://onlinelibrary.wiley.com/doi/full/10.1111/j.1558-5646.2009.00799.x> , ADAPTIONISM30 YEARS AFTER GOULD AND LEWONTIN "In 1979, Stephen Jay Gould and Richard C. Lewontin (Gould and Lewontin 1979), published their highly influential paper on adaptionism entitled The Spandrels of San Marco and the Panglossian Paradigm: A Critique of the Adaptationist Programme. In this paper, Gould and Lewontin warned against confusing function with adaptation. Functional observations may not always have adaptive explanationsexistence of form does not prove purpose. If one observes the spandrels (spaces that exist between arches) of the San Marco church in Venicethe mosaic designs are, in the words of Gould and Lewontin, so elaborate, harmonious, and purposeful that we are tempted to view it as the starting point of any analysis, as the cause in some sense of the surrounding architecture. There is in evolutionary biology a similar failure to distinguish current utility from reasons for origin, they argued. Functional observations (e.g., short front legs of a tyrannosaurus) are often followed by adaptive stories (the use of the front legs to titillate female partners) even if such stories are purely speculative and cannot be tested."...."Evolutionary biologists are today, arguably, much more reluctant to invent adaptive stories without direct evidence for natural selection acting on the traits in question. We still regularly encounter very naïve adaptive stories, particularly about human behavior, but rarely in journals such as Evolution or other related journals with high standards of peer review, and rarely from researchers with a background in evolutionary biology." Many evolutionary biologists regard adaptationism with scorn. But more importantly virtually no biologists call evolution into question.
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Forrest Mims: Maverick Scientist
permalink #108 of 128: Forrest Mims (fmims) Sat 1 Jun 24 12:25
permalink #108 of 128: Forrest Mims (fmims) Sat 1 Jun 24 12:25
In my previous post, I closed out my comments on climate change, which is only briefly mentioned in Maverick Scientist in connection with my finding of no trend for 34 years in total column water vapor, the principle greenhouse gas. (Recall that the first 30 years were subjected to intense review before being published in a leading journal.) Here I will also close my comments on Darwinian evolution. It's certainly a legitimate topic, for two chapters in Maverick Scientist are devoted to the Scientific American affair that followed the editor's concern that I do not accept Darwinian evolution and abortion. But no commenter has provided an evolutinary explanation beyond speculation for the countless molecular motors I cited that are controlling the exact motions of my fingers as these words are typed. I especially asked for the evolution of the amazing kinesin molecule. Response so far: crickets. Instead, several InkWell folk seem absolutely convinced that Charles Darwin was absolutely correct, in spite of his admitted doubts about the fossil record's ongoing absence of transitional forms that supposedly preceded the Cambrian-era fossils described in his The Origin of Species. (Have any InkWellers read this boring but historic book? I have.) Yet during my career doing science, electronics and programming, I have met many engineers and scientists who do not believe they share a common ancestry with apes. After my finding of an error in the Total Ozone Mapping Spectrometer (TOMS) aboard NASA's ozone satellite (Nimbus 7), the journal Nature peer reviewed and published my results. To its credit, NASA did not ridicule my finding. Instead, they promptly acknolwedged the error. (You can see this for yourself and hear a NASA scientist interview by watching the online video Rolex made about the award they provided for my ozone research.) NASA then flew me to the Goddard Space Flight Center to give a talk about my finding, which they called Doing Earth Science on a Shoestring Budget. When I learned that the GSFC ozone staff had invited me to accompany them to lunch before the symposium talk, I was elated, for this would provide an opportnity to ask them ozone-related questions. But that never happened. Instead, those ozone scientists asked me a string of questions about the Scientific American affair and why I doubted Darwinian evolution. I have no idea what they believe about the fossil record and the origin of life, but they certainly were not Darwin boosters. They were polite, friendly, and thanked me for accepting their invitation. After NASA's ozone satellite failed in 1995, they badly needed ozone and total water vapor measurements during SCAR-B, a major scientific study of air quality in Brazil during the peak of the burning season. So, they retained my services. They hired me again in 1996 to measure ozone, water vapor, and optical depth through thick smoke from 7 major forest fires in Western States. When Brazil blocked NASA studies of biomass smoke in 1997, they hired me to go instead. My measurements of ozone, smoke and water vapor were the only such meaurements made during that burning season. When NASA learned about my altitude profile measurements of aerosols and water vapor following the historic eruption of the underwater volcano Hunga Tonga on 15 Jan 2022, they hired me to develop better twilight photometers and continue my measurements until 29 Feb 2024. This research has resulted in the detailed discovery of an ultra-simple method to measure the height of the tropopause, the subject of a paper now in review. While in a remote rain forest near Alta Floresta, Brazil, I measured ultra-thick smoke, ozone and water vapor. I also watched a monkey as it swung on a vine to a banana tree, plucked a yellow fruit, and climbed a nearby tree with only one arm and his legs while staring at me. While I greatly admired his choice of lunch, his dexterity, and his curiosity, it never occurred to me that we somehow share a common ancestor. That of course, is my perogative, just as it is fine with me if a few InkWellers believe they share a relationship with that monkey I enjoyed watching. This closes my comments on climate and evolution for now. I will be glad to respond to any and all comments and questions about the remainder of Maverick Scientist. For example, would you like to know about the commercialization of my ozone and water vapor instruments? Can we discuss measurements of the amazingly historic Hunga Tonga eruption? Would you like to know more about Mims Family Science, a chapter in Maverick Scientist? Would you like to know how I do science with drones? Are you interested in how a non-degreed amateur scientist can be published in the top scientific journals? (Just make a discovery.) Why did I study government and history in college and not science? Why did the National Enquirer hire me to bug Howard Hughes with a laser? I'm open to these and all other topics in Maverick Scientist.
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Forrest Mims: Maverick Scientist
permalink #109 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 12:38
permalink #109 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 12:38
First post: A history of online public messaging <https://arstechnica.com/gadgets/2024/04/first-post-a-history-of-online-public- messaging/> Part 1: The Jurassic era---Early personal computers grow the scene (1978--1996) When Intel invented the microprocessor in 1971, it believed the device would primarily be useful for calculators and other embedded uses, like traffic lights. But when Ed Roberts released the Altair 8800 in 1975, it unleashed a torrent of pent-up demand for personal computers that has never abated. In 1978, Randy Seuss and Ward Christensen took a jury-rigged clone of an Altair computer, connected it to a modem, and wrote the software that would change the world. CBBS, which stood for Chicago Bulletin Board System, was a server that anyone in the world could call up on their own computer, using their own modem, through regular phone lines. -- - - - So you were actually against MITS working on a calculator? ...So Ed ended up owning it, and almost failing due to competition. But those skills led to the Altair. [ My first PC's were Trash-80 and Apple // .. borrowed from my kids' school, and influenced my getting an early /// - which I still have. ]
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Forrest Mims: Maverick Scientist
permalink #110 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:43
permalink #110 of 128: Gary Nolan (gnolan) Sat 1 Jun 24 12:43
The "an evolutinary explanation beyond speculation for the countless molecular motors I cited that are controlling the exact motions of my fingers..." is precisely the adaptionist trap. Again the biological science employ the more subtle science of molecular biology to reinforce the fossil record etc. evidence for evolutyion. Engineers and the like are not who I turn to for informed opinion on whether we are ape descended.
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Forrest Mims: Maverick Scientist
permalink #111 of 128: Forrest Mims (fmims) Sat 1 Jun 24 12:58
permalink #111 of 128: Forrest Mims (fmims) Sat 1 Jun 24 12:58
Alan @ #109 writes: So you were actually against MITS working on a calculator? ...So Ed ended up owning it, and almost failing due to competition. But those skills led to the Altair. Stan Cagle and I were against developing a calculator kit, but that's not why I sold my shares to Ed. My goal was to become a full-time writer, and that had occurred with my first books and many articles. Ed and I remained friends, and I wrote the instruction manuals on how to build the MITS 816 and MITS 1440 calculators. I also wrote the first operators manual for the Altair. As for calculators, they drove MITS to near bankruptcy because of the heavy competition. The Altair saved the company, for Ed sold 5,000 of them. Ed also hired Paul Allen and, later, Bill Gates. They started Micro Soft (later called Microsoft) in a space they rented next to MITS. Interesting how my rocket light flasher initiated this chain of events.
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Forrest Mims: Maverick Scientist
permalink #112 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:08
permalink #112 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:08
> rocket light flasher? I don't have the book .PDF at hand .. that was to detect the spin rate on your ram-jet controller (and night-time missile attack!?)
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Forrest Mims: Maverick Scientist
permalink #113 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 13:09
permalink #113 of 128: Bryan Higgins (bryan) Sat 1 Jun 24 13:09
Just guessing that the ability to move fingers conferred evolutionary advantage. I could be wrong!
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Forrest Mims: Maverick Scientist
permalink #114 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:21
permalink #114 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:21
I think that apes and man alike are complicated bio-chemical machines infiltrated and re-invented by our true ancestors, the prokaryotes.
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permalink #115 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:24
permalink #115 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 13:24
Imagine a narrative where prokaryotes believe in a great primordial "Soup," the origin of all life, from which the first prokaryotic ancestors emerged. These ancestors, blessed by the divine "Light" (the sun), learned to harness energy and proliferate. The guiding principles of their belief system could be: Energy is Life: Revering sources of energy, particularly sunlight, as sacred. Unity in Diversity: Celebrating the diversity of life forms and their interconnectedness. Resilience through Adaptation: Emphasizing the importance of adapting to change and overcoming challenges. Cycle of Life: Honoring the continuous cycle of life through reproduction and genetic exchange. While this is a purely imaginative exercise, it highlights how human concepts of religion and culture can be creatively applied to even the simplest forms of life in a fictional or speculative context. (Thx to g4o)
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Forrest Mims: Maverick Scientist
permalink #116 of 128: Betsy Schwartz (betsys) Sat 1 Jun 24 13:41
permalink #116 of 128: Betsy Schwartz (betsys) Sat 1 Jun 24 13:41
I'm embarrassed to admit that I have not yet read "Maverick Scientist" (which confusingly is listed as "Make - Maverick Scientist" in online bookstores.) But I just realized that the Radio Shack Getting Started in Electronics Handbook that I've hung onto all these years is one of yours!
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Forrest Mims: Maverick Scientist
permalink #117 of 128: Forrest Mims (fmims) Sat 1 Jun 24 15:28
permalink #117 of 128: Forrest Mims (fmims) Sat 1 Jun 24 15:28
Alan @ #112 writes > rocket light flasher? I don't have the book .PDF at hand .. that was to detect the spin rate on your ram-jet controller (and night-time missile attack!?) Maverick Scientist is available in print or a Kindle from Amazon. The book provides full details of the rocket light flasher, provided in part by Prof. Michael Covingtons research. Briefly, I was inspired by my blind great-grandfather to design a travel aid for the blind. He was able to navigate and even count utility poles with the help of his cane (which I inherited). During my senior year at Texas A&M, I expanded my personal science projects to design and build a handheld aid for the blind that used a then state-of-the-art IR LED donated by Texas Instruments and pulsed by a $1.99 code practice oscillator board from a radio supply store. Bursts of IR from the travel aid were reflected from objects, detected by a silicon solar cell in the device, and amplified by a hearing aid amplifier. The device detected objects up to 10-12 feet away. It earned an Industrial Research 100 Award and was publicized by the media. Meanwhile, I had developed a new method of rocket control that required night launches to photograph course changes of the flame trail caused by the guidance mechanism. I needed a way to recover the rockets at night, so I modified the LED drive circuit in the travel aid for the blind to pulse a tiny incandescent lamp. This light flasher project became my first article in Model Rocketry magazine, for which they paid me $93.50. That's when I told my wife Minnie I would become a full-time writer after leaving the Air Force. When my co-worker at the Air Force Weapons Lab saw the magazine article, he agreed we should form a company to sell them to hobbyists. That's when we founded MITS--which eventually led to the founding of Microsoft. Full details about all this are in Maverick Scientist, which I very much hope you will read.
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Forrest Mims: Maverick Scientist
permalink #118 of 128: Forrest Mims (fmims) Sat 1 Jun 24 18:46
permalink #118 of 128: Forrest Mims (fmims) Sat 1 Jun 24 18:46
Betsy @ #116 writes about Getting Started in Electronics. This 128-page book about basic electronics sold 1.3 million copies before Radio Shack closed. It has since sold many more and been pirated globally. The book was my first hand-lettered and illustrated book in 0.7 mm pencil rather than India ink. It was planned and printed (by hand) in 56 days. This included rebuilding each of 100 circuits at the end four times each to eliminate errors. Getting Started in Electronics is still in print, widely available, and used in many schools. The newer versions are comb bound.
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Forrest Mims: Maverick Scientist
permalink #119 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 19:46
permalink #119 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 19:46
When I brought up Faraday, I was looking for people who were untrained in a field, but made significant contributions to it. Another one just popped up - ironically, in Scientific American (a new month, a few free reads): How the Guinness Brewery Invented the Most Important Statistical Method in Science <https://www.scientificamerican.com/article/how-the-guinness-brewery-invented-t he-most-important-statistical-method-in/> ... But the most influential innovation to come out of the brewery by far has nothing to do with beer. It was the birthplace of the t-test, one of the most important statistical techniques in all of science. When scientists declare their findings "statistically significant," they very often use a t-test to make that determination. How does this work, and why did it originate in beer brewing, of all places? ... Gosset solved many problems at the brewery with his new technique. The self-taught statistician published his t-test under the pseudonym "Student" because Guinness didn't want to tip off competitors to its research. Although Gosset pioneered industrial quality control and contributed loads of other ideas to quantitative research, most textbooks still call his great achievement the "Student's t-test." History may have neglected his name, but he could be proud that the t-test is one of the most widely used statistical tools in science to this day. ..
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permalink #120 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 20:58
permalink #120 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Sat 1 Jun 24 20:58
Forrest ... did you run into Bob Pease, and analog engineer who wrote a column "Pease Pudding" in Electronic Design? [ I briefly dated his sister! ]
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permalink #121 of 128: Forrest Mims (fmims) Sun 2 Jun 24 15:07
permalink #121 of 128: Forrest Mims (fmims) Sun 2 Jun 24 15:07
Alan @ #120. Unfortunately, I never met Bob Pease. But we corresponded at times, and he was very familiar with my Radio Shack books. If he were around today, I would ask him about an opamp circuit I am designing for a new twilight photometer. Bob would have provided the perfect answer. I would also ask Bob to review Maverick Scientist!
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permalink #122 of 128: Forrest Mims (fmims) Sun 2 Jun 24 15:22
permalink #122 of 128: Forrest Mims (fmims) Sun 2 Jun 24 15:22
Alan @ #119. Thanks for the fascinating explanation of the origin of the t-test by "Student." This was news to me. I am far better informed about Michael Faraday, the ultimate amateur scientist. As for statistics, I make considerable use of Excel's statistical functions. For example, my ongoing discovery of finding the tropopause height using twilight photometry has benefitted greatly from quick Excel xy plots and correlation coefficients. My ongoing Excel comparisons of tropopause comparisons with those by radiosondes launched from Corpus Christi 207 km from my site is yielding a high correlation coefficients. The r^2 of 62 twilight and balloon comparisons is 0.92.
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permalink #123 of 128: Forrest Mims (fmims) Mon 3 Jun 24 14:54
permalink #123 of 128: Forrest Mims (fmims) Mon 3 Jun 24 14:54
This discussion will be concluding this evening when I will be very busy making twilight measurements. I will have a few breaks, but in case they are brief, I would like to express my appreciation to Emily and all the InkWell participants who have participated in the discussion of my new memoir, Maverick Scientist. Since much of the discussion was about topics covered only briefly in the memoir, I hope those of you interested in how an amateur like me can perform serious research and be published in leading journals of science will peruse the book. I am hopeful it will motivate others to emulate what I have been able to accomplish. As for twilight measurements tonight, if no clouds are present overhead at the zenith, I will be measuring the intensity of residual sunlight from a few km to more than 300 km overhead as the earth's shadow rises higher and higher in the sky after sunset. The photometer will be set for a gain of 5 billion, and it will measure twilight at 625 nm (for Chappuis ozone), 910 nm (aerosols), 970 nm (water vapor), and 1050 nm (aerosols and meteor smoke). After 90 minutes, the instrument will be taken to my office, the 24-bit A/D converter will be downloaded, and the data will be processed and visualized as atmospheric profiles on a series of graphs. Much about this is in Maverick Scientist and a free website online (search Mims twilight photometer). There will likely be some small bulges from 5-7 km from the thick Mexican biomass smoke now drifting overhead. There will be a small but distinct blip between 10-14 km caused by nonvisible cirrus gathered at and below the tropopause. (This is the subject of my paper now in review at a leading journal.) There may be a significant bulge or bulges in the overhead atmospheric profile at 20-30 km, the uppermost of which are residual aerosols from the historic eruption of Hunga Tonga on 15 Jan 2022. (My time series of the Hunga Tonga aerosols will be developed into a major paper around 3 years after the eruption. There might be a bulge between 80-90 km caused by smoke from meteors burning up in the mesosphere. On some evenings cosmic dust is detected well above the mesosphere. Finally, the data will show water vapor that sometimes extends up to 70-80 km. This will also become a paper, for twilight photometry can detect water vapor far higher than sounding balloons. The data can be studied on its own or as a combination of wavelengths. For example, water vapor is extracted from the ratio or difference of the 970 nm signal (a significant water vapor absorption band) and the 1050 nm signal. Chappuis band ozone is extracted from the ratio of 625 nm near the peak of the visible ozone absorption band and 1050 nm.
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permalink #124 of 128: Emily Gertz (emilyg) Mon 3 Jun 24 15:18
permalink #124 of 128: Emily Gertz (emilyg) Mon 3 Jun 24 15:18
Forrest, thank you for being our guest on Inkwell! Good luck with your twilight measurements tonight - using a gadget of your own devising, I assume? Forrest's memoir, Maverick Scientist, can be purchased in PDF or Epub format at Ebooks.com: <https://www.ebooks.com/en-us/book/211230631/make-maverick-scientist/forrest-m- mims/> As well as on Amazon, in Kindle or paperback: <https://www.amazon.com/Make-Maverick-Scientist-Adventures-Amateur/dp/168045816 7>
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Forrest Mims: Maverick Scientist
permalink #125 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Mon 3 Jun 24 16:44
permalink #125 of 128: Alan Fletcher : Factual accounts are occluded by excess of interpretation (af) Mon 3 Jun 24 16:44
Thanks for the review copy, which I will re-read at leasure. Waving as you ride off into the sunset.
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