Melatonin@lemmy.dbzer0.com to Asklemmy@lemmy.ml · 1 year agoProbably a stupid question, but will we ever have something like a microwave to make things cold? Is there a reason this can't exist?lemmy.dbzer0.comimagemessage-square246fedilinkarrow-up1516arrow-down130
arrow-up1486arrow-down1imageProbably a stupid question, but will we ever have something like a microwave to make things cold? Is there a reason this can't exist?lemmy.dbzer0.comMelatonin@lemmy.dbzer0.com to Asklemmy@lemmy.ml · 1 year agomessage-square246fedilink
minus-squareScrappy@feddit.nllinkfedilinkarrow-up3·1 year agoCan I get an ELI5 of this principle? I read the Doppler cooling part but I can’t connect the dots.
minus-squarehstde@feddit.delinkfedilinkarrow-up17·1 year agoHeat energy is the amount of particle wiggling. With precisely tuned and oriented lasers you can clamp a particle in space, thus prevent it from wiggling. No wiggling -> very cold.
minus-squareNatanael@slrpnk.netlinkfedilinkarrow-up1·1 year agoIt’s like slowing cars by crashing another car into them. But it’s photons instead from the exact opposite direction.
Can I get an ELI5 of this principle? I read the Doppler cooling part but I can’t connect the dots.
Heat energy is the amount of particle wiggling. With precisely tuned and oriented lasers you can clamp a particle in space, thus prevent it from wiggling.
No wiggling -> very cold.
It’s like slowing cars by crashing another car into them. But it’s photons instead from the exact opposite direction.