Whirling_Cloudburst@lemmy.world to Technology@lemmy.worldEnglish · 2 years agoWhy It Was Almost Impossible to Make the Blue LEDyoutu.beexternal-linkmessage-square200linkfedilinkarrow-up1969arrow-down131file-text
arrow-up1938arrow-down1external-linkWhy It Was Almost Impossible to Make the Blue LEDyoutu.beWhirling_Cloudburst@lemmy.world to Technology@lemmy.worldEnglish · 2 years agomessage-square200linkfedilinkfile-text
minus-squareAgent641@lemmy.worldlinkfedilinkEnglisharrow-up67·2 years agoMaking blue LEDs is easy. Just make a red one, then move towards it really fast.
minus-squaremikezeman@lemm.eelinkfedilinkEnglisharrow-up3·2 years agohttps://en.m.wikipedia.org/wiki/Redshift#Blueshift Essentially yes
minus-squareSentau@discuss.tchncs.delinkfedilinkEnglisharrow-up2arrow-down1·2 years agoYeah but it only works if the source is moving towards the observer
Making blue LEDs is easy. Just make a red one, then move towards it really fast.
Doppler effect?
https://en.m.wikipedia.org/wiki/Redshift#Blueshift
Essentially yes
Yeah but it only works if the source is moving towards the observer