fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 9 days agoThe speed of lightmander.xyzimagemessage-square20linkfedilinkarrow-up13arrow-down11
arrow-up12arrow-down1imageThe speed of lightmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 9 days agomessage-square20linkfedilink
minus-squareyesman@lemmy.worldlinkfedilinkEnglisharrow-up0·9 days agoI think it’s neat that Newton is taught first. As in: gravity is a function of mass. Because that works in so many scenarios. But then you learn that gravity bends light and that photons have no mass. So… Gravity isn’t a force, it’s more like going downhill… in the dimension of time.
minus-squarespacehulk@lemmy.ziplinkfedilinkEnglisharrow-up0·8 days agoIf they have no mass, how do they push solar sails?
I think it’s neat that Newton is taught first. As in: gravity is a function of mass. Because that works in so many scenarios.
But then you learn that gravity bends light and that photons have no mass.
So… Gravity isn’t a force, it’s more like going downhill… in the dimension of time.
If they have no mass, how do they push solar sails?