Science
36 watchers
Nov 2023
9:25am, 21 Nov 2023
41,597 posts
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Nellers
So co-incidentally (and I'd just listened to TIMC talking about the science of chance and coincidence so I should know!) I'm listening to the latest Shirtloads of Science with Doctor Karl podcast this morning and he's talking about how astronomers measure the universe. Standard Candles are being mentioned and also "Standard Rulers" which result from some fort of rippling caused early in the universe's formation. I think I need to have a sit down and take the weight off my brain to have any chance!
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Nov 2023
10:09am, 21 Nov 2023
38,197 posts
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Ocelot Spleens
Not such a good podcast if you don't know what they're saying. Candles are luminosity. Rulers. 6 inches, that's a lot of rulers then 
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Nov 2023
10:48am, 21 Nov 2023
41,598 posts
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Nellers
I get the concept. Basically there are objects which, due to the way physics works, will always be a uniform size. If you know what that size is, and what angle you’re viewing them at, you can then used simple trigonometry to calculate how far away they are. That much makes sense. The actual physics of how these structures are formed and always at the exact same size is the bit I’m scratching my head at! |
Nov 2023
12:27pm, 24 Nov 2023
492 posts
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George Smiley
theguardian.com Exciting times for particle physicists! |
Nov 2023
12:58pm, 24 Nov 2023
48,612 posts
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HappyG(rrr)
Love it when even the world's most advanced physicists don't know what the heck is going on! I remember at uni in our Physics class, taking the first year text book and flicking to the last page on fundamental particles, and it said something like, "Protons and electrons may be made up of gluons and charmed quarks but... honestly, we're not sure" Or something like that. I thought "Wow, I want to work on the THIS stuff." Never did though. G
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Nov 2023
1:01pm, 24 Nov 2023
24,475 posts
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richmac
theguardian.com Exciting times for particle physicists! But terrifying for the rest of us #werenotalone |
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Dec 2023
2:17pm, 1 Dec 2023
38,264 posts
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Ocelot Spleens
Home grown Baked Beans... bbc.com |
Dec 2023
3:24pm, 1 Dec 2023
3,739 posts
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Nord SledRunner
Been following that on youtube. Wardy's Waffle is the channel, if you're interested in farming.
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Dec 2023
8:07pm, 1 Dec 2023
38,265 posts
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Ocelot Spleens
It's the future. Modifying stuff to become self sufficient.
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Dec 2023
8:26pm, 1 Dec 2023
16,001 posts
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jda
UK will never be close to self-sufficient with population at present size. There's just not the land unless we farm far more intensively than we do now, which is unlikely to be politically acceptable. And there's precious little incentive for an advanced industrial (service-led) economy to move massively into food production when other countries have far more land. Trade is beneficial at the national just as the individual level. |
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