If you decide which end you want the sand to flow towards, and attach something with sufficient mass to that end, it should work. Might be a bit slow, though, if it’s designed to work in the Earth’s gravity.
If it is aligned with a planet or star, is moving in a straight line toward, or away from that body (or held stationary). the sand will flow at a rate inversely proportional to the square of the distance.
There is nowhere in space where there is absolutely zero gravitational field, so they should always work, but slower. That is, until the gravitational force is less than the frictional force between the grains of sand. Then they would not work. (End of nerd moment)
Qiset about 1 month ago
Or maybe time stops.
SHIVA about 1 month ago
Of course, it needs gravity to work!!!
Zykoic about 1 month ago
Sand dilation, per Einstein.
Kaputnik about 1 month ago
If you decide which end you want the sand to flow towards, and attach something with sufficient mass to that end, it should work. Might be a bit slow, though, if it’s designed to work in the Earth’s gravity.
P51Strega about 1 month ago
If it is aligned with a planet or star, is moving in a straight line toward, or away from that body (or held stationary). the sand will flow at a rate inversely proportional to the square of the distance.
HappyDog/ᵀʳʸ ᴮᵒᶻᵒ ⁴ ᵗʰᵉ ᶠᵘⁿ ᵒᶠ ᶦᵗ Premium Member about 1 month ago
Yours might not but my glasses do.
simonwerman Premium Member about 1 month ago
There is nowhere in space where there is absolutely zero gravitational field, so they should always work, but slower. That is, until the gravitational force is less than the frictional force between the grains of sand. Then they would not work. (End of nerd moment)
tudza Premium Member about 1 month ago
Iron filings with an electro-magnet in the base.
Regular hour glass in a centrifuge.
Fire up the engine to one g.
ladykat about 1 month ago
They don’t?
The Brooklyn Accent about 1 month ago
In space, no one can hear you say “time’s up.”
sandflea about 1 month ago
i don’t think he grasps the gravity of the situation.
Teto85 Premium Member about 1 month ago
Looks like something you would see in RBION.
2rusty8491 about 1 month ago
How do you know? Have you tried it?
MissyTiger about 1 month ago
Wouldn’t the glass break due to the air pressure inside the hourglass, and lack of air pressure outside?
rockyridge1977 about 1 month ago
How much did the government spend on that one???