Avatar

Eximius

Eximius@lemmy.lt
Joined
0 posts • 14 comments
Direct message

UV radiation is quite damaging (although part of the popular “summer tan” culture) on its own. However, we also receive higher energy photons (above UV: xray, gamma) as well as some energetic muons from the sun. You get a 4x of a daily dose of radiation if you grab a flight. Around that of an xray. All of which is mostly ignored by people.

You are correct that gamma ray radiation is by far the most damaging radiation. Beta and alpha radiation can be stopped by pieces of paper (or your skin), gamma radiation will go through your house, your car, your wife, hit a dna molecule in your hair follicle, and make that hair follicle permanently gray.

More interestingly, putting the “radioactive” seawater in perspective: tritium fizzles into some beta radiation, of 18kev energy. Assuming, magically, all this (beta radiation) energy was deposited perfectly into your DNA (nearly impossible because it is beta radiation), resulting in maximal damage, in somewhere important and not the dead layer of your skin, doing a tiny calculation we can compute this damage to be that of a photon of 0.07nm wavelength (18 kev), of similar energy used in simple xray imaging (CT imaging uses 5x higher energy). With 10 becquerels / liter, 100 liters of water surrounding you, could inflict a horrible dose of 24 (hours) * 3600 (sec / hour) * 10 x 100 x 18 kev * 1.60218e-16 (Joule / kev) / 70 (kilograms per human) = 3.55958619e-9 Sv in a day

That is a terrifying amount of 3.6 nSv. Almost close to 1/20 that of a banana you eat (I am not joking, just smiling heavily).

Fun facts: https://xkcd.com/radiation/

The fact that people talk about radioactivity in this news, and chinese being angry and the world going apeshit is… unfathomable.

permalink
report
parent
reply

What? USB 2.0 is 480mbps. Much faster than most wifi routers (you need non-cheap 2x2 (i think) antenna to get >300mbps speeds on routers in ideal conditions).

permalink
report
parent
reply

Do you like Trump? Or <insert local asshole politician here>?

“Fuck <asshole person>” is one way to express to a wider forum of people a desire for change. Once you do communicate it, you can actually take action.

Do you really think starting for example a “richtig and genau” petition without “hate speech” is better at accomplishing anything, than actually communicating a hate and working on it (hopefully); a hate that is honestly… deserved.

If I didn’t see something like this on r/place, I might think reddit users got lulled into accepting late-stage capitalism fate.

Fuck Spez.

Or in more, different words: Spez is an asshole and deserves to see “his” “company” go bankrupt for his poor decisions.

permalink
report
parent
reply

Any form of government with idiots at the helm will fail. With power at the helm and feebleness of the people defining the grandeur of the fail.

I.e. I want to say: the form of government doesnt matter. Just defines the imaginary friction for the government to do things and stuff.

permalink
report
parent
reply