del 4

A photon checks into a hotel. The front desk asks “Do you need help with your luggage?” The photon replies, “I don’t have any. I’m travelling light.”  No, jokes aside, light (electromagnetic waves) are quite important here.

If you were piloting a ship with him and asked him “Are we going the right way?” He’d reply saying “Off course, we are”. No, jokes aside, today the topic is navigation in the middle of nowhere.