Saturday 16 July 2016

Facts

How many pages can you make out of a tree?


Since trees are different sizes, it would be difficult to say how much paper comes from one tree. According to one paper manufacturer, however, a cord of wood measuring 4 feet by 4 feet by 8 feet—or 128 cubic feet—produces nearly 90,000 sheets of bond-quality paper or 2,700 copies of a 35-page newspaper.


How much does an Indy race car weigh?


Indy cars are also much lighter. Current specifications mandate they weigh 1525 pounds, not including driver and fuel. NASCAR rides can weigh 3200 pounds and up to 3400 pounds, including fuel and driver.

How is radium used?

Radium had been used to make self-luminous paints for watches, aircraft instrument dials and other instrumentation, but has largely been replaced by cobalt-60, a less dangerous radioactive source. A mixture of radium and beryllium will emit neutrons and is used as a neutron source.

No comments:

Post a Comment

Comments system

Disqus Shortname