https://en.wikipedia.org/wiki/Eigenfunction
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In the study of signals and systems, an eigenfunction of a system is a signal f(t) that, when input into the system, produces a response y(t) = λf(t), where λ
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Eigenfunction – Wikipedia
December 30, 2021Paul Dirac – Wikipedia
December 30, 2021https://en.wikipedia.org/wiki/Paul_Dirac#:~:text=Dirac%20was%20known%20among%20his,was%20one%20word%20per%20hour.
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Dirac was known among his colleagues for his precise and taciturn nature. His colleagues in Cambridge jokingly defined a unit called a “dirac”, which was one word per hour.
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Heligoland – Wikipedia
December 30, 2021https://en.wikipedia.org/wiki/Heligoland
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Werner Heisenberg (1901–1976) first formulated the equation underlying his picture of quantum mechanics while on Heligoland in the 1920s. While a student of Arnold Sommerfeld at Munich in the early 1920s, Heisenberg first met the Danish physicist Niels Bohr. He and Bohr went for long hikes in the mountains and discussed the failure of existing theories to account for the new experimental results on the quantum structure of matter. Following these discussions, Heisenberg plunged into several months of intensive theoretical research but met with continual frustration. Finally, suffering from a severe attack of hay fever, he retreated to the treeless (and pollenless) island of Heligoland in the summer of 1925. There he conceived the basis of the quantum theory.
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Individual cells’ proteins vary. Single-cell proteomics can now show how
December 30, 2021Doing single-cell analysis without amplification….
https://cen.acs.org/biological-chemistry/proteomics/single-cell-proteomics-mass-spec/99/i40
Russell’s Paradox (Stanford Encyclopedia of Philosophy)
December 30, 2021https://plato.stanford.edu/entries/russell-paradox/
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John von Neumann’s (1925) untyped method for dealing with paradoxes, and with Russell’s paradox in particular, is simple and ingenious. Von Neumann introduces a distinction between membership and non-membership and, on this basis, draws a distinction between sets and classes. An object is a member (simpliciter) if it is a member of some class; and it is a non-member if it is not a member of any class.
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Russell’s paradox – Wikipedia
December 30, 2021https://en.wikipedia.org/wiki/Russell%27s_paradox
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Informal presentation Most sets commonly encountered are not members of themselves. For example, consider the set of all squares in the plane. This set is not itself a square in the plane, thus it is not a member of itself. Let us call a set “normal” if it is not a member of itself, and “abnormal” if it is a member of itself. Clearly every set must be either normal or abnormal. The set of squares in the plane is normal. In contrast, the complementary set that contains everything which is not a square in the plane is itself not a square in the plane, and so it is one of its own members and is therefore abnormal. Now we consider the set of all normal sets, R, and try to determine whether R is normal or abnormal. If R were normal, it would be contained in the set of all normal sets (itself), and therefore be abnormal; on the other hand if R were abnormal, it would not be contained in the set of all normal sets (itself), and therefore be normal. This leads to the conclusion that R is neither normal nor abnormal: Russell’s paradox.
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List of devices for enhancing zoom session
December 29, 20211. HDMI switcher feed in multiple videos into a computer via USB-C
– ATEM mini https://www.bhphotovideo.com/c/product/1507214-REG/blackmagic_design_swatemmini_atem_mini_switcher_control.html – Alternatively, ATEM mini pro (same function as mini, except it can record video output to a USB drive, you might want this for archiving)
https://www.bhphotovideo.com/c/product/1557461-REG/blackmagic_design_atem_mini_pro_hdmi.html
2. pro-grade microphone that you can plug into the computer via USB Shure MOTIV MV7 Dynamic Cardioid USB and XLR Podcast Microphone (New, Black, Podcaster Bundle with K&M 23840 Desk Arm)
https://www.shure.com/en-US/products/microphones/mv7
3. lighting solution
Soft LED lightbox with stand
https://www.amazon.com/gp/product/B08LGTHW4F/ref=ppx_yo_dt_b_asin_title_o08_s0
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