Determine Planck’s constant using six narrow-band visible LEDs and a precision voltmeter.
The method is based on well known expression of diode current for V
Fill the form — we’ll respond with a proforma invoice, INCOTERMS variations and lead-time within one business day.
Determine elementary charge by observing charged oil droplets in an electric field.
Measure the charge-to-mass ratio of the electron with a precision Helmholtz coil setup.
Classical photoelectric apparatus with shielded photodiode and constant-current source.
