fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 12 hours agoThe speed of lightmander.xyzimagemessage-square49fedilinkarrow-up1345arrow-down12
arrow-up1343arrow-down1imageThe speed of lightmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 12 hours agomessage-square49fedilink
minus-squareyesman@lemmy.worldlinkfedilinkEnglisharrow-up17arrow-down1·9 hours 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-up1·33 minutes agoIf they have no mass, how do they push solar sails?
minus-squareBlackLaZoR@lemmy.worldlinkfedilinkEnglisharrow-up1·7 minutes agoThey have mass. Everything that has energy has mass. They don’t have inertial mass but it’s just part of the equation
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?
They have mass. Everything that has energy has mass. They don’t have inertial mass but it’s just part of the equation