Helium Shortage has ended ...

[Superlyte27]

What was your price before?

52 or 54 cents, can’t remember lol

 

[BRT]

In order to get the static force in metric you have to multiply by the gravity of earth. While pounds already factor in the force of gravity.

But reality is that both are measured as a force.

 

[bubblemonkey2]

But reality is that both are measured as a force.

Certainly the problem with "pounds" becomes hilarious when considering people in Earth orbit, where gravity is a bit lower in strength. There they will have the same mass, but a different "weight." Clearly an archaic system from the past (Imperial) quickly falls on its face.

Furthermore occupants of the Intl Space Station are perhaps correctly described as "weightless," but this leads to the misconception that they are massless, or no longer experiencing gravity. What is actually happening is that they are in -freefall around Earth-, due to the strength of gravity pulling their mass constantly away from their otherwise straight trajectory out into space.

Ps. everyone diving helium should be using rebreathers

 

[BRT]

Certainly the problem with "pounds" becomes hilarious when considering people in Earth orbit, where gravity is a bit lower in strength. There they will have the same mass, but a different "weight." Clearly an archaic system from the past (Imperial) quickly falls on its face.

Furthermore occupants of the Intl Space Station are perhaps correctly described as "weightless," but this leads to the misconception that they are massless, or no longer experiencing gravity. What is actually happening is that they are in -freefall around Earth-, due to the strength of gravity pulling their mass constantly away from their otherwise straight trajectory out into space.

Ps. everyone diving helium should be using rebreathers

How would you figure out how many pounds someone weighed, or how many kilos's of mass they had, while they were on the space shuttle?

 

[bubblemonkey2]

How would you figure out how many pounds someone weighed, or how many kilos's of mass they had, while they were on the space shuttle?

Lots of ways. You could collide them with known masses and measure the resulting velocities to derive their mass, using the principles of momentum. Measurements of rotational acceleration would also indicate mass (i.e. spin them). With sensitive instruments, one could also use the force of gravity that they themselves generate to estimate their mass--as Cavendish famously did at the end of the 18th century. Definitely watch the original Cosmos series (with Sagan)

 

[BRT]

Lots of ways. You could collide them with known masses and measure the resulting velocities to derive their mass, using the principles of momentum. Measurements of rotational acceleration would also indicate mass (i.e. spin them). With sensitive instruments, one could also use the force of gravity that they themselves generate to estimate their mass--as Cavendish famously did at the end of the 18th century. Definitely watch the original Cosmos series (with Sagan)

Uh huh. And they have those capabilities on the orbitor?

 

[Manatee Diver]

Uh huh. And they have those capabilities on the orbitor?

They use a spring contraption measuring how long it takes the astronaut to move a meter.