wait until you learn about the information density of DNA

i remember there is an XKCD about it, i just can’t find it rn

edit: https://what-if.xkcd.com/31/

fun fact: street vehicles are still being used to transport data around. for large amounts of data, it’s faster and cheaper to write it on a disk, then ship the disk, instead of transporting it over the internet.

nah i think the purple thing is the filter … the smoke goes through it and acquires scent that way.

lots of food products taste boring in the west because

• we’ve been told that stuff that tastes good is probably full of additives and therefore bad for your health (think of all the chemicals!)
• and because of the same christian mindset that got us the cornflakes:

Cereal would create fortunes and create multinational companies that we still know today. But Dr. John Harvey Kellogg , the inventor of corn flakes, did not care about profits. For him, cereal was not just a health food because it would improve Americans digestion. He believed a diet centered on bland foods like cereal would lead Americans away from sin. One very specific sin: masturbation.

it’s very well comprehensible if you’re good with numbers.

thank you!

haha :)

but it’s also about price. do i buy the 200g package at 2,50€ or the 350g package at 4,20€?

having things broken down to “per 100g” helps me with that.

remember that flock cameras can be seriously impaired with a little spray paint

was it on some nightcore music video?

apparently. “natural uranium” refers to uranium with about 3% U235 content meanwhile the remaining 97% are U238, i think.

edit:

ah i had the numbers somewhat off apparently.

debt-to-gdp crisis

is not an actual crisis, money on those political levels doesn’t work the same way as it would for households.

did you calculate how much gram of CO2 that is per kWh actually?

CANDU 9

very interesting. for those who want to know how it works:

Most commercial reactor designs use normal water as the moderator. Water absorbs some of the neutrons, enough that it is not possible to keep the reaction going in natural uranium. CANDU replaces this “light” water with heavy water. Heavy water’s extra neutron decreases its ability to absorb excess neutrons, resulting in a better neutron economy. This allows CANDU to run on unenriched natural uranium, or uranium mixed with a wide variety of other materials such as plutonium and thorium. This was a major goal of the CANDU design; by operating on natural uranium the cost of enrichment is removed. This also presents an advantage in nuclear proliferation terms, as there is no need for enrichment facilities, which might also be used for weapons.

From Wikipedia. So the key is to improve the neutron economy sothat there’s more neutrons available; then, these extra neutrons can go on to split extra material, which is thereby consumed.

better yet: pour it into concrete, dump it in the ocean.

it’s just not done yet because people are thinking that there might be another use case for nuclear waste in the future.

yeah and until recently they imported all their uranium from states like niger which is why it took till 2023 for niger to kick out the last french troops from its country.

which is interesting because solar became the cheapest form of electricity in 2020 and france let go of niger shortly after that.

How dependent is France on Niger’s uranium?

The military coup in Niger has raised concerns about uranium mining in the country by the French group Orano, and the consequences for France’s energy independence.

FYI 1 kg battery when fully discharged loses about 10⁻¹² kg of its rest mass …

yeah it’s pretty crazy how much energy is in fuel.

1 kg of oil contains about 30 MJ of energy. enough to accelerate an object of the same mass to 7.7 km/s. which is almost escape velocity on earth (11.2 km/s), or enough velocity to shoot the object out of earth’s gravity field altogether.

(a kg of oil, ofc, costs about $1)

the thing is that different people use different serving sizes. – written by somebody who pours lots of oil over salad.

what i don’t get is who uses that little oil that they have to spray it? i just pour oil all over it.