Archives of Ask A Scientist!
About "Ask A Scientist!"
On September 17th, 1998 the Ithaca Journal ran its first "Ask A Scientist!" article in which Professor Neil Ashcroft , who was then the director of CCMR, answered the question "What is Jupiter made of?" Since then, we have received over 1,000 questions from students and adults from all over the world. Select questions are answered weekly and published in the Ithaca Journal and on our web site. "Ask A Scientist!" reaches more than 21,000 Central New York residents through the Ithaca Journal and countless others around the world throught the "Ask a Scientist!" web site.
Across disciplines and across the state, from Nobel Prize winning scientist David Lee to notable science education advocate Bill Nye, researchers and scientists have been called on to respond to these questions. For more than seven years, kids - and a few adults - have been submitting their queries to find out the answer to life's everyday questions.
UV-light is very, very violet. Actually it is so violet that you can't see it, but you can get a sunburn from it. So on its own UV-light wouldn't make a useful lamp: that's why there is a phosphorous substance in the inside of the glass tube. When UV-light hits the phosphor atoms, they absorb the UV light and send out the white light that illuminates your room. The conversion of light from one type to another is called fluorescence, which gave the fluorescent lamp its name.
Fluorescent lights conserve energy. For the same amount of light they need less power than usual light bulbs. By the way, the funny shaped light bulbs made of bent glass tubes in the supermarket are actually fluorescent lamps. Please don't play and break fluorescent lamps: they contain chemicals that are poisonous. When disposing of a fluorescent lamp, you should call the Recycling Center!
- How does energy that is released as heat get reused?
- How do lasers in machines work?
- Are there life forms (animals, insects) that live in underwater volcanoes?
- I know that water can put out a fire. What does liquid nitrogen do to a fire?
- What causes the electron within an atom to emit photon packets? We were told to make a diagram of it. What causes the electron to skip down a level and emit photons?
- Does magnetism work in space?
- Why is there discussion as to whether or not glass is a liquid or a solid?
- How are crystals formed?
- How does a mass spectrometer separate isotopes?
- Can humans ever see in the dark with no night vision glasses or other aids?