00229_02_phy_lichtgeschwindigkeit

2
Speed of light c 0 = 299 792 458 meter/second Laser Detektor Reflektor ˂W ˂s www.phywe.com physics product information Speed of light High-tech in a didactic form Measuring the speed of light, as well as distances, with only one device all thanks to state-of-the-art digital measuring technology The speed of light meter as central device features a modulated laser. The laser beam is guided along the measuring path and back into the measuring instrument. The phase shift between the emitted signal and the received signal enables the speed of light to be determined with an accuracy of +/- 2%. All of the measurement quantities that are required for calculating the speed of light are displayed. If one places various transparent media, such as water, oil, synthetic resin, or acrylic glass into the beam path, the change in the speed of light can be measured. If one knows the speed of light, the unit can be used for measuring distances. An oscilloscope is not required for the experiment. The unit is, however, equipped with output sockets for the signals so that the measurement method can be demonstrated in an even more profound didactic manner with a simple two-channel oscilloscope. Features Quick set-up and minimum adjustment needed The speed of light can be measured with an accuracy of +/- 2 % Measurements can be performed with or without an oscilloscope Integrated display of all of the relevant measurement quantities ( ƒ , φ, t, x) Determination of the speed of light of liquids and solids Distance measurements can be performed with the same device

Upload: sidlabs-l

Post on 17-Mar-2016

212 views

Category:

Documents


0 download

DESCRIPTION

Quick set-up and minimum adjustment needed Determination of the speed of light of liquids and solids If one places various transparent media, such as water, oil, synthetic resin, or acrylic glass into the beam path, the change in the speed of light can be measured. If one knows the speed of light, the unit can be used for measuring distances. Integrated display of all of the relevant measurement quantities (ƒ, ∆φ, ∆t, ∆x) Detektor Reflektor c 0 = 299 792 458 meter / second s Laser

TRANSCRIPT

Speed of light

c0 = 299 792 458 meter / second

Laser

Detektor Reflektor

s

www.phywe.comphysics

product information

Speed of lightHigh-tech in a didactic form

Measuring the speed of light, as well as distances,

with only one device all thanks to state-of-the-art

digital measuring technology

The speed of light meter as central device features a

modulated laser. The laser beam is guided along the

measuring path and back into the measuring

instrument. The phase shift between the emitted

signal and the received signal enables the speed of

light to be determined with an accuracy of +/- 2%.

All of the measurement quantities that are required

for calculating the speed of light are displayed.

If one places various transparent media, such as

water, oil, synthetic resin, or acrylic glass into the

beam path, the change in the speed of light can be

measured. If one knows the speed of light, the unit

can be used for measuring distances.

An oscilloscope is not required for the experiment.

The unit is, however, equipped with output sockets

for the signals so that the measurement method can

be demonstrated in an even more profound didactic

manner with a simple two-channel oscilloscope.

FeaturesQuick set-up and minimum adjustment needed

The speed of light can be measured with an accuracy of +/- 2 %

Measurements can be performed with or without an oscilloscope

Integrated display of all of the relevant measurement quantities (ƒ, ∆φ, ∆t, ∆x)

Determination of the speed of light of liquids and solids

Distance measurements can be performed with the same device

product information

PHYWE Systeme GmbH & Co. KG Robert-Bosch-Breite 10 D-37079 Göttingen

T. +49 (0) 551 604 - 0 F. +49 (0) 551 604 - 107

[email protected] www.phywe.com

10/2009, Copyright by PHYWE SystemeGmbH & Co. KG, subjects to alteration,errors and omissions excepted.

00229-02 Succursale belge Grand’Route 79

B-4610 Beyne-HeusayT. +32 (0) 436 162 - 30 F. +32 (0) 436 162 - 48 + 49

[email protected] www.phywe.com

Measurement equipment for the speed of light

Measurement equipment for the speed of light with retro reflector and power supply 11226.99

Speed of light measuring instrument, complete set

The set includes:

Speed of light measuring instrument with a retroreflector and power supply unit

Optical bench 1.8 m for the measuring the speed of light

Measuring instrument holder for the optical bench

3 slide mounts

Acrylic glass cylinder with a holder

Tubular cell with a holder

Speed of light measuring instrument – complete set for performing the experiment 11226.88

Oscilloscope

Digital storage oscilloscope, 25 MHz, 2 channel, color display incl. 2 x BNC cable 75 cm

Oscilloscope 11456.99

Products

Technical details

0

50

100

150

200

250

0 0,5 1 1,5 2

Weg s in m

Phas

endif

fere

nz φ

in °

c= λ· ƒ ƒ = 50,0 MHz λ = (2∆s/∆φ)·360

Dimension (mm): 194 x 140 x 130

Operating voltage 12 V DC (power supply unit included,

input: 100 … 240 V~, 50 … 60 Hz)

Power consumption: 5 VA

Diode Laser: Wavelength 635 nm, laser class 2

(complies with the safety regulations

for schools)

Display: 3-digit LED-Display,

digit height 20 mm

USB PortRetro reflector with a stem (included)

“Speed of Light” equipment set (11226.88)

Complete set for perfor-

ming the experiment

phas

e dif

fere

nce

distance