Astronuc's latest activity
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Astronuc reacted to Borg's post in the thread Medical New Alzheimer's Treatment Clears Plaques From Brains of Mice Within Hours with
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I've been reading a bunch of articles in this month's Scientific American on Alzheimer's and ran across this article in a web feed that... -
Astronuc reacted to Ibix's post in the thread I How Can Photons Be Massless Yet Have Energy According to Einstein's Equations? with
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That formula is only correct for stationary massive objects. The general formula is ##m^2c^4=E^2-p^2c^2##, from which you can see that... -
Astronuc reacted to PeroK's post in the thread I How Can Photons Be Massless Yet Have Energy According to Einstein's Equations? with
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The equation ##E = mc^2## only applies to a particle with mass. And, indeed, that's its energy only when it is at rest. The full... -
Astronuc reacted to PeterDonis's post in the thread B Photon Energy Without Rest Mass – How? with
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It only applies to particles with rest mass that are at rest. See below. Yes. The general equation is $$ E^2 = p^2 c^2 + m^2 c^4 $$... -
Astronuc replied to the thread SpaceX SpaceX Starship development: 7th flight January 10.Looking back 10 years - https://www.physicsforums.com/threads/spacex-interplanetary-transport-system.887117/ One person who was key to... -
Astronuc replied to the thread Technical Analysis on Titan Sub (Titanic Sub).Titan submersible imploded due to poor engineering https://www.bbc.com/news/articles/cdeg7y4171xo Hull Failure and Implosion of... -
Astronuc reacted to Flyboy's post in the thread Chinese Hypersonic Aircraft - Mach 6.56!? with
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Agreed, there’s no real market for hypersonic vehicles in the civilian market. High supersonic is a maybe, but not hypersonic. As for... -
Astronuc reacted to FactChecker's post in the thread Never think never for an improbable event with
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Simulators can model failures by programming in appropriate fault insertion options. Most simulators do not include much of the actual... -
Astronuc reacted to jedishrfu's post in the thread Photorhabdus luminescens & "Angel's Glow" with
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I saw this story recently, and I think they said a teenager from Maryland went to the battle site and tracked down the bacterium...