Signal Engineer Kids T-Shirts

Funny design where we can see how is a digital waveform using an X-Ray machine.

High Voltage

Light is an electromagnetic wave. Actually the color of the light is correlated to its wavelength. Short wavelength represent violet color, that’s why it often being called ultraviolet, and long wavelength represent red color, that’s why it is called infrared.

I do not exceed Restricted Speed 2

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