Apparatus for Determining Planck's Constant By Lambda Scientific Systems, Inc., USA
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Apparatus for Determining Planck's Constant

Apparatus for Determining Planck's Constant

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10 Piece per Month

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Lambda Scientific Systems, Inc.

Lambda Scientific Systems, Inc.

USA

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Personne à contacter Mr. James

16300 SW 137th Ave, Miami, Florida

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Description

 

This LEAI**2 experimental apparatus for determining Planck's constant is used to demonstrate the photoelectric effect, measure the characteristic curve of a photoelectric tube, verify the existence of "red limit" frequency, and calculate the Planck’s constant according to the Einstein’s equation of photoelectric effect. It is an ideal teaching apparatus for physics laboratories in colleges and universities.
    
Specifications
Wavelength of filters **5 nm, **5 nm, **6 nm, **6 nm, **7 nm
Light source *0 W Mercury lamp
Sensor

Vacuum phototube; wavelength range **0 ~ **0 nm
Cathode sensitivity ≥1 µA (*2 V≤UKA≤0 V)
Anode dark current ≤5×****2 A (*2 V≤UKA≤0 V)
Current measurement range ***7 ~ ****3 A, **1/2 digit display
Phototube power supply Voltages: I: *2 ~ *2 V; II: *2 ~ **0 V, **1/2 digit display, stability ≤0.1 %
Zero drift < ±0.2% of full scale (for scale ****3 A) within *0 minutes after warm-up
Measurement method Zero current method and compensation method
Measurement error 3%

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