# Measurement & Units

## K8-33: NANOSECOND CABLES

Purpose: Cables which delay a signal by a fixed time interval.

## I3-01: BAROMETER - ANEROID TYPE

Category: I3 Gases
Purpose: Indicate air pressure.

## I1-01: THERMOMETERS

Purpose: Show several types of thermometers.

## H1-31: SOUND LEVEL METER

Category: H1 Nature of Sound
Purpose: Demonstrate use of a sound level meter.

## H1-11: MICROPHONE AND OSCILLOSCOPE

Category: H1 Nature of Sound
Purpose: Show the wave shape of various sounds.

## G1-55: INERTIA BALANCE

Purpose: Illustrate the measurement of inertial mass using SHM.

## G2-06: FRAHM'S FREQUENCY METER

Purpose: Check the 60 Hz line voltage frequency.

## F2-41: DENSITY - SLOPE OF MASS VS VOLUME GRAPH

Category: F2 Buoyancy
Purpose: Determine the density of water.

## F2-11: HYDROMETER

Category: F2 Buoyancy
Purpose: Measure the density of a liquid.

## B4-21: DEFLECTION OF BEAM - OPTICAL LEVER

Category: B4 Elasticity
Purpose: Demonstrate the small deflection of an aluminum beam due to weighting between supports.

## E2-02: MEASUREMENT OF RADIUS OF EARTH

Category: E2 Astronomy
Purpose: Demonstrate how the radius of the earth can be measured using trigonometry.

## P4-51: MILLIKAN OIL DROP MODEL

Purpose: Demonstrate geometry for the Millikan oil drop experiment.

## B2-41: ROBERVAL BALANCE

Purpose: Demonstrate a paradox in equilibrium of forces and torques

## A2-32: HEIGHT MEASUREMENT BY TRIGONOMETRY

Category: A2 Mathematics
Purpose: Determine the height of a student using trigonometry

## A1-32: VOLUMES - SPHERICAL VS CYLINDRICAL

Purpose: Illustrate a volume perception paradox

## A1-22: HOURGLASS

Purpose: Show an hourglass

## A1-12: METRIC TAPE

Purpose: Make measurements in the metric system

## A1-02: MASSES - CHROME PLATED

Purpose: Show a collection of calibrated masses

## K8-04: SPEED OF LIGHT

Purpose: Measure the speed of light
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• #### G1-01 EXAMPLES OF SIMPLE HARMONIC MOTION

Illustrates simple harmonic motion Read More
• #### G1-11 COMPARISON OF SHM AND UCM

Demonstrates the relationship between simple harmonic motion and uniform circular motion Read More
• #### G1-12: PENDULUM AND ROTATING BALL

Demonstrate that simple harmonic motion is the projection of uniform circular motion Read More
• #### G1-13: MASS ON STRING

Illustrate uniform circular motion Read More
• #### G1-14 PENDULA WITH DIFFERENT MASSES

Demonstrates independence of a simple pendulum's period with mass of the bob Read More
• #### G1-15 PENDULA WITH 4 TO 1 LENGTH RATIO

Shows that period of a simple pendulum is proportional to the square root of its length Read More
• #### G1-16: PENDULUM WITH LARGE OSCILLATION

Show the difference between pendula with small amplitude and large amplitude of oscillation, and to show rotational motion where the Read More
• #### G1-17: PENDULUM WITH LARGE-ANGLE OSCILLATION - PORTABLE

Illustrate large-angle pendular oscillations and the 360 degree pendulum Read More
• #### G1-18: PENDULUM WITH FORCE SCALE

Show the tension in the string exerted by a swinging pendulum Read More
• #### G1-20: GALILEO'S PENDULUM AND THE PENDULUM RELEASE CONUNDRUM

Encourage thought about the motion of a pendulum and related forces Read More
• #### G1-31: HOOKE'S LAW AND SHM

Quantitatively demonstrate how the spring constant affects the period of a mass on a spring Read More

• #### G1-33 MASSES AND SPRINGS WITH SPIDER

Compares frequencies of various mass-spring combinations Read More
• #### G1-34: AIR TRACK - SIMPLE HARMONIC MOTION

Demonstrate simple harmonic motion of a mass held by two springs Read More
• #### G1-35: MASS ON SPRING - EFFICIENT MODEL

Illustrate the motion of a mass on a spring Read More
• #### G1-36: MASS ON SPRING WITH FORCE MEASUREMENT

Display the time dependence of the force of a mass oscillating on a spring Read More
• #### G1-37: MASS ON SPRING WITH ULTRASONIC RANGER

Plot graphs of position, velocity and acceleration for a mass oscillating on a spring Read More
• #### G1-41: TORSIONAL PENDULUM - SMALL

Demonstrate torsional SHM, and to show the effect of moment of inertia on the period Read More
• #### G1-43: KLINGER TORSIONAL VIBRATION MACHINE

Demonstrate torsional SHM, and to quantitatively show the effect of moment of inertia on the period Read More
• #### G1-51: INVERTED SPRING PENDULUM

Illustrate a form of periodic vibration Read More
• #### G1-52 STRINGLESS PENDULUM

Demonstrates an example of SHM Read More
• #### G1-53: SHM - CAN IN WATER TANK

Demonstrate one form of SHM Read More
• #### G1-54: MASS'S DOUBLE PENDULUM

Demonstrate the transition of potential energy into energy of oscillation of the pendulum, and the operation of an escapement Read More
• #### G1-55: INERTIA BALANCE

Illustrate the measurement of inertial mass using SHM Read More
• #### G1-56: INVERTED PENDULUM - SABER SAW

Show the inverted pendulum dramatically Read More
• #### G1-57: INVERTED PENDULUM - SPEAKER DRIVEN

Demonstrate the conditions for stability of an inverted pendulum Read More

Analog to the longitudinal motion of a particle in a particle accelerator driven by a sinusoidal accelerating potential Read More
• #### G1-59: BIFILAR PENDULUM

Illustrate a system with two pendular modes of oscillation Read More

• #### G1-73: LISSAJOUS FIGURES - FOURIER SYNTHESIZER

Show stable Lissajous figures Read More
• #### G1-74: LISSAJOUS FIGURES - LASER AND LOUDSPEAKER

Show Lissajous figures created by music to form a laser show Read More
• #### G1-81: OUIJA WINDMILL

Illustrate a combination of simultaneous orthogonal oscillations Read More
• #### G1-82: PENDULUM WAVES

Create waves in a very dramatic way using a series of fifteen carefully adjusted independent pendula Read More
• #### G1-83: PENDULUM WAVES - COMMERCIAL VERSION

Create waves in a very dramatic way using a series of carefully adjusted pendula of various lengths Read More
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