Timeline
Xinhua - Chinese company unveils bogies for 400 km/h bullet trains:
http://en.people.cn/n3/2024/0718/c90000-20194951.html
#CRRC #RailwayBogie #EnergyEfficiency #CostReduction #Railway #BulletTrain #Train #Transportation #Engineering
Bob Yirka - Rethinking the incandescent lightbulb:
https://phys.org/news/2023-04-rethinking-incandescent-lightbulb.html
#IncandescentBulb #Lightbulb #Filament #CarbonNanotube #Boron #Nitrogen #PhotonRecycling #EnergyEfficiency #Physics