Spencer Heath Archive

Item 691

Pencil by Heath on notepad paper.

No date

 

 

When a gram accelerates from rest 0 to 1 centimeter per second or

When a gram has been moved 1 centimeter in 2 seconds it will thereafter move 2 centimeters in each second (on its own). The force that moved it and which it now has is 1 dyne (about 1/100 gram)

This dyne acting through 1 centimeter is an erg.

After this acceleration the gram is able to move with a force of 1 dyne 2 centimeters each second

Acceleration of — (whatever caused by)

Change of velocity from 0 to a rate of 1 foot in one second

(distance ½ foot)

 

Also — change of velocity from 1 foot in 1 second (elapsed

time) to 2 feet per second

An increase of velocity of 1 foot per second in each second

     1 foot per second per (each) second

The force that does this to 1 pound is called a poundal

7

Acceleration of —- (by any cause)

 

Change of velocity from 0 to a rate of 1 centimeter in 1 second

(distance ½ centimeter)

 

Also — change of velocity from 1 centimeter in 1 second

(elapsed time) to 2 centimeters per second

An increase of velocity of

1 centimeter per second in each second

1 centimeter per second per (each) second

______________________

The force that does this to 1 gram is called a dyne,

about 1/1000 of a gram.

                   /Proof this item against the original./