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Uranium Marble Ring Oscillator

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danielDaniel
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  • Description
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  • Discussion 4
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uranium marble

This project was created on 10/06/2015 and last updated 9 years ago.

Description

Seven UV LEDs facing inwards on a circle around a uranium glass marble, wired as a ring oscillator to create a beautiful glowing/spinning effect.

This is my take on the original design that has apparently been around since at least 2009 (at 26C3).

Details

Components

  • 1 × Uranium Marble
  • 7 × UV LEDs
  • 7 × 2N7000 transistor Discrete Semiconductors / Diode-Transistor Modules
  • 7 × 300 Ω resistor
  • 7 × 33 kΩ resistor

View all 7 components

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lantramnamcodon wrote 05/08/2017 at 15:59 • point

have you tried to make laser with uranium glass?However that could have made you cancer.

  Are you sure? yes | no

Rjpope42 wrote 02/15/2016 at 16:02 • point

Thanks for the reply, I got some 385 and some 400nm from digikey, the 400nm were cheaper and work better

  Are you sure? yes | no

Rjpope42 wrote 02/07/2016 at 05:32 • point

Very nice!

What wavelength LEDs did you use?

  Are you sure? yes | no

Daniel wrote 02/15/2016 at 11:06 • point

Sorry, a friend had those LEDs just lying around so I don't have any info on that. You can clearly see them emitting visible light... if that helps. Not sure if the marble reacts to one specific wavelength..

  Are you sure? yes | no

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