The earliest working telescopes was made around 1608 with many who claimed its discovery. The design was simple; a convex objective lens and a concave eyepiece allowed the user to see further. In 1655, astronomers had build more powerful telescopes using a design by Kepler. This design used a convex objective lens and a convex […]Read more "The Early Telescopes"
Nicholas Copernicus was born February 19, 1473 and died May 24, 1543. Galileo Galilei was born February 15, 1566 and died January 8, 1642. Johannes Kepler was born December 27, 1571 and died November 15, 1630. Isaac Newton was born December 25, 1642 and died March 20, 1726. Tycho Brahe was born December 14, 1546 […]Read more "Historical Astronomers in Context"
This website allows you to scroll and compare the sizes of from the smallest, a Quantum Foam, to the Observable Universe. Starting at the scale of the Eiffel Tower, humans disappear from view. The sizes of objects increase each time you scroll out. The Eiffel Tower disappears when you start looking at Rhode Island. Then the […]Read more "The Scale of the Universe"
After 6 months, astronauts in the International Space Station would have aged about 0.007 seconds less that people on Earth. This is due to the International Space Station moving much faster than the Earth. Time itself will bend due to differences in gravity or velocity. Now what if an object starts to move close to […]Read more "Speed of Light and Time"
Hey here, I am Kewei Xu. I am an Electrical Engineering Major with a Computer Science Minor. I I sometimes forget to do assignments like this one. Did you read the previous sentence as “I sometimes” or “I I sometimes”?Read more "Introduction"