# 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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• #### H1-01 BELL IN VACUUM

Demonstrates sound wave requirement for a medium Read More
• #### H1-02 SPEAKER AND CANDLE

Demonstrates longitudinal behavior of sound waves Read More
• #### H1-03: BELLS

Use bells as a sound source Read More
• #### H1-04: BELL IN VACUUM - PORTABLE

Small version of the standard bell in vacuum demonstration Read More
• #### H1-11: MICROPHONE AND OSCILLOSCOPE

Show the wave shape of various sounds Read More
• #### H1-12: VISIBLE WAVEFORMS ON LARGE SPEAKER

Show the loudspeaker motion produced by waves of various shapes Read More
• #### H1-13 WAVEFORM GENERATOR, SPEAKER AND OSCILLOSCOPE

Demonstrates waveform and sound of standard waves Read More
• #### H1-21: SPEED OF SOUND - PHASE CHANGE

Determine the speed of sound Read More
• #### H1-22: SPEED OF SOUND - USING PULSES

Determine the speed of sound in air Read More
• #### H1-24: SPEED OF SOUND IN HELIUM

Determine the speed of sound as a function of gas density Read More
• #### H1-25: SPEED OF SOUND BETWEEN TWO MICROPHONES

Measure the speed of sound by determining the travel time of a pulse between two microphones Read More
• #### H1-26: SPEED OF SOUND IN GARDEN HOSE

Direct measurement of the speed of sound in air Read More
• #### H1-27: SPEED OF SOUND - LISSAJOUS FIGURES

Measurement of the speed of sound in air using Lissajous figures Read More
• #### H1-31: SOUND LEVEL METER

Demonstrate use of a sound level meter Read More
• #### H1-32: WAVETEK AND AUDIO CART - EQUAL SOUND LEVEL STEPS

Illustrate the effect on the ear of successive changes of exactly 10 dB Read More
• #### H1-41: ULTRASONIC MOTION DETECTOR

Demonstrate how an ultrasonic motion detector works Read More
• #### H1-43: ULTRASONICS AND HEARING

Demonstrate that there exist ultrasonic waves with frequencies above the range of human hearing Read More
• #### H1-44: ULTRASONIC MOTION DETECTOR WAVE FORM

Show the wave form of the ultrasonic signal created by the ultrasonic motion detector Read More
• #### H1-51: AUDIOTAPE 42 MIN - SCIENCE OF SOUND - SHORT VERSION

Illustrate various audio phenomena Read More
• #### H1-52: AUDIOTAPE 82 MIN - SCIENCE OF SOUND - LONG VERSION

Illustrate various audio phenomena Read More