AirborneRodent
AirborneRodent t1_iu850s6 wrote
Reply to comment by scurvydog-uldum in TIL that antimatter is made with antiprotons, which are the opposite of protons, with a negative charge, antineutrons with a neutral charge and positrons, which are the opposite of electrons, with a positive charge. by Doomguy2021
You have to go smaller. A neutron is made of an up quark (+2/3 charge) and two down quarks (-1/3 charge each). An antineutron is made of an up antiquark (-2/3 charge) and two down antiquarks (+1/3 charge each).
Even though they both sum to zero charge, they're still opposite. And they still annihilate each other if they come in contact.
AirborneRodent t1_isrmobc wrote
Reply to comment by PizzaQuest420 in TIL: Airplanes take off and land into the wind. They takeoff into the wind to reduce the groundspeed required to lift and land into it to reduce groundspeed when landing. by Key-Code-4296
It's an old meme from 2007 or so. It's up there with the blue/black dress on the list of memes that caused the most arguments on the internet.
AirborneRodent t1_iybfpbr wrote
Reply to comment by hvgotcodes in TIL that beans are banned in Spacecraft because they can produce "1-3 cups of flatus" in an environment where there are no windows by April_Spring_1982
The fart would move from the high-pressure side to the low-pressure side. Whether you call that "suck" or "blow" is just semantics. They're the same thing.