Apr 16, 2007
What connects cooling computer chips, melting car engines, and a balloon that will not pop? This week’s science video sees Robert Krampf explaining the principles behind heat sinks, car radiators, water cooling, and how to hold a balloon above a burning candle without it ever popping.
Krampf points out that, “Because we’re using fire, always …
Dec 27, 2006
The question how does salt affect the boiling point of water is a common one Sciencebase readers ask. It’s presumably a course question and those visitors are after a quick answer for their science essay.
The fact that dissolving a salt in liquid, such as water, affects its boiling point comes under the general heading of colligative properties in chemistry. These are effects that determine how a liquid will behave …
Dec 25, 2006
The short answer is no. Despite what you may have heard some snowflakes are exactly the same shape and size as other snowflakes.
The long answer follows:
Jon Nelson, a researcher with Ritsumeikan University in Japan, has studied snowflakes for fifteen years, and has some interesting insights into their delicate structures. He points out that the old adage that ‘no two snowflakes are alike’ might be true for larger snowflakes, but it …
Nov 27, 2006
From the age of 13, Mark Leach has had a subscription to the popular-science magazine Scientific American, and more recently the journal Nature. His scientific interests include cosmology, high energy and nuclear physics, materials science (particularly carbon nanotubes), geophysics, molecular biology, evolution, information technology, the brain, defense technology, and scientific ethics. Professionally, Mark is a chemist interested in ‘chemistry, the-whole-thing’. I interviewed for my Reactive Profile column this month, find …
Aug 24, 2006
With a new school year almost upon us, there is a pressing need for parents everywhere to get advance warning of the kind of science conundrums (conundra?) they will face when their little darlings return with that first batch of science homework.
As ever, sciencebase is here to help with a bench covered in science fair projects, a labful of science experiments and all the science books for home study you can bear.
A …
Jun 15, 2006
A friend of mine is into nature conservation in a big way and one of the tools of the trade, which to the outsider may seem rather odd, is owl pellet dissection.
Owl pellets are the regurgitates remains (bones, feathers and other indigestibles) that accumulate in this bird of prey’s gizzard after it dines on small rodents and other critters. The dessicated pellets are to be found lying where they …
Apr 19, 2006
We’ve got a stack of information available to science students including science homework and chemistry assignment help, science fair projects and science class demonstration guides. The free stuff is fine, but we also offer science project resources in partnership with 24 Hour Science Projects, which you or your parent will have to pay for. We recommend these project packs very highly though …
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Nature Reviews Drug Discovery publishes the highest-quality reviews and perspectives plus news stories and features that investigate key issues in drug discovery...moreover if you check my resume, you'll see that the magazine is in my client list. more info...
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