16 ms on LCD but what about CRT ??

phsstpok

Splendid
Dec 31, 2007
5,600
1
25,780
That number is the time required to switch the polarity of the liquid crystals.

CRTs don't have a coresponding number.

<b>56K, slow and steady does not win the race on internet!</b>
 

phsstpok

Splendid
Dec 31, 2007
5,600
1
25,780
CRT pixels light up fast but they take much longer to "un-light" due to phosphor persistence.

P22R (red) phosphor decays at a rate of 0.7 millisecond per 10% decay (I looked it up). P22G (yellow-green) and P22B (blue) decay much faster at about 0.06 millisecond per 10% decay.

According to my crude calculations, at those rates it takes a red pixel about 5 milliseconds to go from full bright to half intensity. 10 milliseconds to reach 1/4 intensity. Call it 15 milliseconds to go from full bright to black. That's 15,000,000 nanoseconds.


<b>56K, slow and steady does not win the race on internet!</b>
 

Crashman

Polypheme
Former Staff
Funny thing about those pixels though...by the time they begin to dimm, they can change color because they are lit by another beam.

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