namnit

namnit t1_iug5s1w wrote on October 31, 2022 at 1:48 AM

Reply to LPT: Collect brushed fur of your pets into a bag and put it into a bird feeder. The birds will take away this fur for their nests by mykeuk

My experience has found the opposite: birds DON’T like cat fur at all. They actively avoid it when I’ve set it out for them to use for nest-building. I assume the smell says “predator” to them.

namnit t1_iufz12l wrote on October 31, 2022 at 12:56 AM

Reply to comment by Lance_E_T_Compte in Is there such a thing as a gamma radiation mirror? by AlarmingAffect0

There’s a group at NASA’s MSFC that develop X-ray optics and have done so for the Chandra and IXPE missions, among others. The grazing-incident mirrors are usually in a nested configuration inside cylindrical shells.