A conversation between a man and woman. Please note that she asks five or six questions which he answered quite simply, but then she is speechless after he ask only one simple question. l bet this happens more often than not:
Woman: Do you drink beer?
Woman: How many beers a day?
Man: Usually about three
Woman: How much do you pay per beer?
Man: $5.00 which includes a tip (this is where it gets scary!)
Woman: And how long have you been drinking?
Man: About 20 years, I suppose
Woman: So a beer costs $5 and you have three beers a day which puts your spending each month at $450. In one year, it would be approximately $5400 correct?
Woman: If in 1 year you spend $5400, not accounting for inflation, the past 20 years puts your spending at $108,000 correct?
Woman: Do you know that if you didn’t drink so much beer, that money could have been put in a step-up interest savings account and after accounting for compound interest for the past 20 years, you could have now bought an airplane?
Explanation: Put a satellite in a circular orbit about 42,000 kilometers from the center of the Earth and it will orbit once in 24 hours. Because that matches Earth’s rotation period, it is known as a geosynchronous orbit. If that orbit is also in the plane of the equator, the satellite will hang in the sky over a fixed location in a geostationary orbit. As predicted in the 1940s by futurist Arthur C. Clarke, geostationary orbits are in common use for communication and weather satellites, a scenario now well-known to astroimagers. Deep images of the night sky made with telescopes that follow the stars can also pick up geostationary satellites glinting in sunlight still shining far above the Earth’s surface. Because they all move with the Earth’s rotation against the background of stars, the satellites leave trails that seem to follow a highway across the celestial landscape. The phenomenon was captured last month in this video showing several satellites in geostationary orbit crossing the famous Orion Nebula.