A historic photograph showing the crowded but neatly organized living area of Lt. Adolphus Greely. Books, clothing, and scientific instruments hang from walls and bookcases.

Measuring Gravity at Fort Conger

A computer reconstruction of the pendulum used at Fort Conger is visible through an open door in the Lady Franklin Bay Expedition house. A small telescope is visible in the foreground. A small window opens when the game is played, showing the pendulum swinging back and forth behind a measurement scale.

A window appears containing an image of Kater's Pendulum as seen from the officer's quarters inside the expedition house. The pendulum hangs in an 'A' shaped wooden frame inside one of the lean to structures at each end of the house. A telescope sits on a small tripod in the foreground and is aimed at the base of the pendulum. The viewer presses a button marked 'Case One' to see if the pendulum's period of oscillation is the same when in its regular and inverted position. When the button for Case One is pressed, a small viewer appears in the lower right hand corner of the screen showing the pendulum moving back and forth against a scale within the viewfinder of the telescope. The viewer works through a series of these Cases until the period of oscillation is identical.

CASE 1

Start the timer on Case One to find if the heavy and light side counts are the same.

CASE 2

Start the timer on Case Two to find if the heavy and light side counts are the same.

CASE 3

Start the timer on Case Three to find
if the heavy and light side counts are the same.

CASE 4

Start the timer on Case Four to find
if the heavy and light side counts are the same.

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