Wednesday, October 24, 2007
What is the Milky Way?
It is the name given to our Galaxy, which is shaped like a disc with a central bump. It is also the name for the dense band of stars that spans the sky. As a galaxy, the Milky Way is actually a giant, as its mass is probably between 750 billion and one trillion solar masses, and its diameter is about 100,000 light years.
Posted by rapat_umum at 6:22 PM 0 comments
Labels: Planet
Thursday, September 27, 2007
What is a spectrograph?
It is an instrument for producing and photographing a spectrum. Used to measure properties of light over a specific portion of the electromagnetic spectrum.
Posted by rapat_umum at 4:53 PM 0 comments
Labels: graph
Sunday, September 16, 2007
How is paper made?
Most (though not all) paper is made from wood. Logs are stripped of bark, chopped into very small pieces and then pulped. The pulping stage is important, for at that time various chemicals and things like clay, or old rags, or even straw, are added, which determine the quality, colour and smoothness (or roughness) of the finished paper. Once pulped, the paper is rolled into sheets which are dried out before being cut to required shapes and sizes.
Posted by rapat_umum at 7:46 PM 0 comments
Labels: Made
Thursday, September 13, 2007
What is a boutique?
From the French for shop, the word is now used to indicate a particular kind of small store that specializes in ready-made fashion clothes, and perhaps crafts, scents and soaps.
Posted by rapat_umum at 6:49 PM 0 comments
Labels: Foreign expressions
Wednesday, September 5, 2007
What is an altimeter?
It is a dialled meter for showing how high an aircraft or spacecraft is above ground. Most altimeters work using air pressure. The measurement of altitude is called altimetry
Posted by rapat_umum at 8:15 PM 0 comments
Labels: graph
Wednesday, August 29, 2007
What is a telemeter?
It is a piece, or pieces, of apparatus for measuring physical changes from a distance. It has wide application in space technology.
Posted by rapat_umum at 10:01 PM 0 comments
Labels: graph
Which is the largest planet in our Solar System?
Jupiter is the fifth planet from the Sun and the largest planet within the solar system. It is two and a half times as massive as all of the other planets in our solar system combined.It is about ten times the diameter of the earth, and rotates on its axis in about ten hours, which is faster than Earth.
Posted by rapat_umum at 10:00 PM 0 comments
Labels: Planet
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