As you sit reading this post, the computer you're using is hard at work.
For this post i want to talk specifically about fiber optics.
Though the use of Fiber optics, your computer can send and receive messages much quicker, and for a lot less money.
Basically, Fiber optic cables are just long glass tubes.
Your computer sends pulses of light into the glass tubes that get sent out as messages.
These pulses of light hit the inside of the glass at their Critical Angle thus reflecting the pulses completely.
technology is fun