yes, you can flash Morse Code with torches. It is very effective in the dark, and was commonly used on ships for communicating in storms and darkness.
Hebrew was originally used for speaking and communicating. It still is used for that.
The bugle
How power can be used and abused
For communicating with peripheral devices.
The presence of of a link light indicates that the transmit and receive pairs are properly aligned and the connected devices are communicating.
Yes.
communicating
Gestures.
I don't think there's a standard word. When I talk to light, I call it photocommunication. Other people call it schizophrenia.
You can use Morse code. The Navy uses Signal Lamps, which are lamps that produce concentrated, focused pulses of light. But you could just use a flashlight, depending on what you were communicating and the the circumstances of your predicament.
firewall
17(90 ccalloulateour