Remote Internet laboratory - secondary school of J. Vrchlicky, Klatovy

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LED current-voltage characteristic
(an approximate determination of Planck's constant)


If the experiment is now free, you can start immediately. If you want to book the experiment for a given term, use the booking system.

 Suitable for:

elementary school
demonstration of electroluminescent phenomenon and function of LED
secondary school
in addition: volt-ampere characteristics for different colors of LED, determining of the static and dynamic serial (differential) resistance
in addition: relationship between the threshold voltage and the radiated frequency (wavelength) of the light emitted - estimation of Planck's constant
Reservation system rules
  1. Experiments are still freely available. Reservation is only for reservation of the specified term.
  2. For booking, you must register your email, which will serve as your username (for all experiments).
  3. The email will be verified by sending a verification code. This verification is only at the initial registration.
  4. Reservations are possible in half-hour blocks. Blocks can be linked to create a longer, continuous period.
  5. The reservations limit is a maximum of 5 (half-hour) bookings per month (for the experiment).
  6. Reservations may be canceled 24 hours before the specified time.


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