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Showing content with the highest reputation on 02/12/23 in all areas

  1. It may help to note that Newton’s second law is F = dp/dt (p is momentum). This becomes F = ma if the mass is constant. So one can view a force as the rate of change of momentum. As studiot points out, there is a change in direction, meaning there is a change in momentum. Thus, a force.
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  2. In his famous book The American Black Chamber (1931), Herbert O. Yardley the former head of the US Army cryptographic section of Military Intelligence (MI-8) in WW1 - and founder of its successor the Black Chamber in 1919 - dryly describes how the new Secretary of State Henry L. Stimson shut down the entire codebreaking unit in 1929 with the laconic observation ‘Gentlemen do not read each others mail”. Henry L. Stimson later became the US Secretary of War during WW2, and relied heavily on the Army SIS team who broke the Japanese diplomatic ‘Purple’ codes, and the US Navy Combat Intelligence Unit who broke JN-25, the principal Japanese Naval ciphers and code system. footnote - Stimson was later credited with having vetoed the idea of including the ancient Japanese city of Kyoto on the list of potential atom bomb targets, because he and his wife had spent their honeymoon there.
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  3. The key thing to watch is not cholesterol, which the body makes for itself anyway, but lipoproteins which carry it in the blood, in particular LDLs, low density lipoproteins. Eggs are not high in those.
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  4. This is getting out of hand… now they’re even pre-announcing them in New Mexico! https://balloonfiesta.com
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  5. I'm sorry, but that is an incredibly silly post, almost Trump standard. You do know that there are Ukrainians walking the streets and living their lives, totally unaffected by the Russian presence? And why on Earth do you think that a Jew should walk freely in the Gaza Strip? Most Palestinians in the strip have relatives undergoing torture in Israeli jails, or have lost a loved one. If Palestine had been Jewish for thousands of years, and the Jews were now being slowly squeezed out by incoming Muslims, with hundreds of thousands confined to refugee camps, would you think that was all right?
    1 point
  6. I think you're still confused as concerns 'fields' in algebra vs 'fields' in physics. Very different things. It's like 'dog' in 'hot dog' vs 'dog' in 'I'm walking my dog.'
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  7. I have read some speculation that the greater proximity to the surface allows the antenna array to pick up weaker signals - especially short-distance line-of-sight communications that are used by the military. Even if they can't crack the encryption, just knowing the location and duration of the squirts, and their timing, can reveal a lot. (from unidentified Pentagon source that spoke to CNN): The balloon's spyware payload, the size of a regional jetliner, had "multiple antennas to include an array likely capable of collecting and geo-locating communications." There is also this, from David DeRoches, a professor at the Near East South Asia Center for Strategic Studies at the National Defense University in Washington, DC. -- He told Al Jazeera the Chinese balloon shot down by the US could also have been used to “gather information on what kind of signals [the US is] using to track it, so it could possibly identify and classify radar hits … which could be of interest if the Chinese wanted to actually launch an attack.” Stuff you can't get from a Pine Gap + satellites type setup, IOW. And also, obviously, the relatively slow speed of a balloon v LEO satellite, and greater proximity will also yield clearer images of ground objects of interest. (and geosynchronous satellites are at an even greater distance, and so their imaging can be pretty foggy)
    1 point
  8. Just a thought. If I really wanted to make black people look stupid, I'd post that video clip without mentioning that it's fake. I'd let people think that it illustrates a real incident where a group of people did something monumentally stupid. (Rather than it being an advert for a film.) 83,048,009 views 6 Jul 2011 In theaters now! Purchase tickets online @ http://www.fandango.com/riseoftheplan... ---------------- http://www.facebook.com/apeswillrise - For the latest 'Rise of the Planet of the Apes' news & updates ------ http://itun.es/igb4Ky - --- Soldiers give monkey a loaded gun From https://www.youtube.com/watch?v=GhxqIITtTtU In broad terms, do you think that video clip is more likely to be quoted out of context by racists or non racists? Which group do you want to be seen as part of? In broad terms, does the video that purportedly shows a group of black guys being really really stupid (without making it clear that they are paid actors) play in favour of, or against, racism? So, OK I apologise. I was too subtle in pointing out that (without context) the video is "too wrong to be funny". That video is deeply offensive. I really think that the best thing to do is either clarify that the video is deliberately fake or take it down. (Not everyone will realise that a chimp wouldn't be able to handle the recoil of a real gun; nor would they calmly ignore the noise it made) I also apologise for not realising the full extent to which people would be offended by the way I did that. OK I really am sorry about that. I'm also sorry for any offence I caused.
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  9. FYI Luke Air Force base, as well as a statue in Phoenix, are dedicated to Frank Luke Jr. Frank was a daring WW1 ace, who shot down 14 German balloons and 4 aircraft during a short combat stint in France. Because balloon shoot downs were considered suicide missions,he was regarded by E Rickenbacker as "the most daring aviator and greatest fighter pilot of the entire war" The F-22 Rapto that downed the Chinese spy satellite used the call sign 'FRANK'
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  10. Y’all both must be feeling old today as grumpy as hell as you be acting. How bout you just GTF off each others lawn already and take a nap? This is pretty typical of how conversations re: Israel Palestine go. That’s part of the reason bad actors keep bringing the topic to the fore.
    -1 points
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