Asked by Maddison

I know that this seems like a REALLY EASY question, but for some reason I cannot think of anything!

2. What technologies have been developed that use light?

This is from a grade 8 textbook, so nothing to technical!
Answered by DrBob222
The computer writes to a disk with laser light. Compact disks are read with laser light. Perhaps that example will recharge your thinking battery.
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