So a sphere of 2m radius has a surface of about 50 m^2.
A 1000 lumen bulb illuminates the sphere with app 1000 lm / 50 m^2 = 20 lux (not 50 lux as OP wrote).
So the calculation is a bit off. OTOH if we had bulbs that shine downwards only it would be sufficient to just divide by the floor. So 100,000 lm in a 10m^2 room gets you 10,000 lux.
According to a friend of mine who served as a flight engineer in the red army until somewhen in the nineties your post pretty much nails it.
He called a former Ukrainian colleague today. According to him Russia obtained complete air souvereignty today. Ukrainian air defence was destroyed by sea-launched cruise missiles. Regular Ukrainian troops are not fighting. They leave their weapons behind and go away. High ranked russian staff promised not to chase them. To the majority of Ukrainian soldiers it just feels not right to shoot russians. So Russia covered a lot of ground today without firing much. Extremist formations on both sides and Russian mercenaries are the ones who do real fighting.
This is consistent with the media insofar as you would usually expect: x killed troops in y, z troops caught, strategic installations damaged etc. You cannot get these reports if one side literally throws their guns away and goes home.
In my friend’s opinion Kiev will fall within the next few days if not tomorrow, the government will either flee or get captured and he joked there will be elections next week.
How? I referenced the underlying data. They have Microsoft kernel bugs. Zoom bugs. Even systemd. What am I missing? I think they coincidentally happen to have their bug tracker hosted on chromium’s site.
The other day I had a splinter in my left index fingertip that was so small I couldn‘t see it even under a magnifier. After some clueless and painful poking with a needle, removing my glasses did the trick. I located the splinter and got it out within seconds. Around -6 in glasses.
https://nos-nl.translate.goog/artikel/2438234-universiteiten...