Ever wanted to see how a record player picks up information from your records? And we mean really see? Well now you can...

YouTube channel Applied Science has put together an ingenious video using an electron microscope to show exactly that - plus microscopic images of other formats, including CD and DVD.

Getting the incredibly detailed vinyl footage was no easy process, requiring a specially adapted record and turntable.

First, a small section of the vinyl had to be cut off to fit into the microscope chamber. The record also had to be coated in a conductive material (in this case evaporated silver), as otherwise the electrons fired at its surface by the microscope would have been absorbed, trapped and eventually repelled.

A new stylus also had to be made, as the magnets in the original cartridge would have deflected the incoming electrons. To solve this, the magnets were removed. And there's a custom tonearm too that fits into the microscope chamber and acts as a decent substitute to a regular tonearm.

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More after the break

The video image the microscope creates has a low resolution, making it hard to see. To overcome this, Ben Krasnow, the man behind the channel, employs a stop-motion animation technique: saving a frame, moving the LP piece by 50 microns, saving another frame, and so on, until he has 60 frames.

The frames were assembled using PhotoShop to make an animated GIF, which plays about 1/400th of real speed. 

The GIF allows you to see that the stereo record has two channels of audio information per groove.

And if your mind wasn't blown already, you can then see the same techniques applied to CD, DVD and even a capacitance electronic disc, to deliver some fascinating microscopic images of the information on each disc. 

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[via: The Vinyl Factory]

Comments

Frank Harvey's picture

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Always amazes me. Vinyl has no right to sound as good as it does when you look at the mchecanics up close!

bigboss's picture

Wow!

Wow!

Henley's picture

This was done a few years ago

This was done a few years ago (but in far greater close up) by Virgin Money for a TV advert.  We've tried to get the footage for training purposes but have failed so far.  If anyone can find it we would be most grateful.