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"Machine designed by Atwood to allow the measurement and calculation of the velocities of falling bodies at various points accurately and easily." —Quackenbos 1859

Atwood's Machine

"Machine designed by Atwood to allow the measurement and calculation of the velocities of falling bodies…

"When bodies of equal weight are supported by the arms of a lever, they will balance each other when placed at equal distances from the fulcrum." —Quackenbos 1859

Balance

"When bodies of equal weight are supported by the arms of a lever, they will balance each other when…

One of the largest group of beetles, mostly having shiny, black bodies.

Ground Beetle

One of the largest group of beetles, mostly having shiny, black bodies.

"The center of gravity, in any body or system of bodies is that point upon which the body, or system of bodies, acted upn only by gravity will balance itself in all positions." -Comstock 1850

Center of Gravity

"The center of gravity, in any body or system of bodies is that point upon which the body, or system…

This antique bronze cist is a chest or box like space used to hold the bodies of the dead.

Antique Bronze Cist

This antique bronze cist is a chest or box like space used to hold the bodies of the dead.

"In a vacuum, all bodies fall at the same rate." -Comstock 1850

Falling Bodies in a Vacuum

"In a vacuum, all bodies fall at the same rate." -Comstock 1850

"When a feather and a cent are dropped from the same height, the cent reaches jthe ground first. this is not because the cent is heavier, bu because the feather meets with more resistance from the air in proportion to its mass. If this resistance can be removed or equalized, the two bodies will fall equal distances in equal times, or with the same velocity. The resistance may be avoided by dropping them in a glass tube from which the air has been removed. The resistances may be nearly equalized by making the two falling bodies of the same size and shape bu of different weights, as in the preceding experiment." -Avery 1895

Velocities of Falling Bodies

"When a feather and a cent are dropped from the same height, the cent reaches jthe ground first. this…

The bodies of those who were buried in the pyramids were preserved from decay by a secret process, known only to the priests. After the bodies were prepared, they were wrapped in bands of fine linen, and on the inside of these was spread a peculiar kind of gum. There were sometimes a thousand yards of these bands on a single body. After they were thus prepared, a soft substance was placed around the bandaged body. This covering, when it hardened, kept the body in a complete state of preservation.

Mummy

The bodies of those who were buried in the pyramids were preserved from decay by a secret process, known…

A mummy coffin.

Mummy

A mummy coffin.