Loading...

Light Emitting Diodes... in 1907?

1,663 views

Loading...

Loading...

Loading...

Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jul 7, 2016

Because of its "high-tech" nature, most people assume the LED to be a comparatively recent development. Not necessarily so...

In this video I reference an account of some strange observations made in the early 1900s and then replicate them with a few simple items---a power supply, microscope, and a chunk of a common industrial abrasive. See for yourself!

This means that the LED was really not so much invented as discovered, and that human eyes first witnessed a functioning LED not in the 1970's or 1960's, but at least as far back as 1907!

I invite you to review my article: "Who Really Invented the LED?" where I explore the background on all of this in greater detail.
Please visit my website at:

www.hpfriedrichs.com

Loading...

When autoplay is enabled, a suggested video will automatically play next.

Up next


to add this to Watch Later

Add to

Loading playlists...