Eratosthenes measurement of the radius of the Earth in 200BC

http://www.math.yorku.ca/Who/Faculty/Steprans/Courses/2041-42/Aristarchus/Aristarchus.shtml

Why should we return to the Moon?

from: www.nasa.gov








Please Click the picture for a clear view. NASA want to go back to the moon and build a permanent base by 2020. So we are still allive to see it.

An interview

NOVA: Where does your fascination with physics comes from?

Jim Gates: When I was eight years old, my father bought a set of Encyclopedia Britannica. I was bored one day so I started opening the books, and I came across Schroedinger's equation, which is one of the foundations of modern physics. It was like walking on a beach and finding a marvelous shell and being fascinated by it. I thought to myself, "Gee, one day I wonder if I could ever understand that."

Earlier I had found out that stars were not just things you could look at but places you could go. I had the sense that science and technology were the ways that you got there, so there was this resonance with science and technology and mathematics.

Strangely his situation is similar to mine!

Let's recall some word from Newton

I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.

If I have seen further it is by standing on the shoulders of giants.

Nature is very consonant and conformable with herself.

-----Isaac Newton

Space Shuttle Launch

Today I watched some short movies of launching space shuttle by NASA, about 10 minutes long together, but costing 2.5G. Two of them are Endevour and Atlantis. Though they can just move around near the Earth, they represent the will of us to explore the universe and stand for the honor of human beings.

Seeing Earth from the space, the bright elegant arch in the darkness really impressed much. I hope some day we can go further, leaving Earth, leaving the solar system, leaving the Milk Way galaxy, to a whole new world.

About My old blog

I moved my blog from http://juntinghuang.spaces.live.com/ to this place so that more people can visit and comment on my site. So if anyone who want to know the history about my blog, please visit the adress above.

first article

I creat this blog so that I can exchange my ideas with many people, known or unknown.