LCD monitor

[Karl Auer]

On Sat, 2017-07-29 at 12:03 +0200, Ralf Mardorf wrote:
> If I pick a guitar string in front of my 90 Hz CRT, I notice a
> stroboscope effect. If I do the same in front of my 60 Hz LCD, there
> is no stroboscope effect.

I'm pretty sure that LCD screens don't actually flicker; they are
steady. Try blowing a raspberry at your CRT from a metre or two away -
it will appear to wobble. Your LCD won't. But I could be wrong. So I'm
not sure what your experiment proves.

Also, how far is that guitar string from your CRT screen? If it's a
metal string, you will have moving metal in an electrical field, which
should generate magnetic eddies, and they would also affect the image.
Again, I haen't done this, but would expect to see some effect if the
vibrating string were very close to the CRT.

I no longer have any CRT tech in the house at all, so I cant test that
fascinating theory :-)

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
http://twitter.com/kauer389

GPG fingerprint: A52E F6B9 708B 51C4 85E6 1634 0571 ADF9 3C1C 6A3A
Old fingerprint: E00D 64ED 9C6A 8605 21E0 0ED0 EE64 2BEE CBCB C38B