Moving Waves, Seed Search, Getting to the Root
Chromatography, Creeping Carpets, Air Space, Words of Science
No Dented Cans, Air Has Weight, Coffee Rings
These experiments are from Robert Krampf - The Happy Scientist
281 - Moving Waves - Find out how waves move, but water does not.
282 - Seed Search - The many ways that plants spread their seed.
283 - Getting to the Root - Using cuttings to produce new plants.
284 - Chromatography - Chromatography
is the science of separating chemicals as they are carried along by a liquid. In the world of
forensics, chromatography is used to separate chemicals to look for and
identify possible poisons and other chemical evidence.
285 - Creeping Carpets - We live at the beach, and our carpets tend to get dirty and
sandy, so we place small rugs along the pathway that gets the most use. One
problem is that the rugs don't stay there. They slowly migrate across the
room. How can this happen?
286 - Air Space - How much
air space is there in common substances?
287 - Dirty Words of Science - Over the years, I
have composed quite a list of "dirty words" that offend many scientists.
288 - No Dented Cans - Why is it a bad idea to buy dented cans?
289 - Air Has Weight - This experiment is based on a "classic" experiment often seen in textbooks
to show that air has weight. While it starts simple, it takes some twists
along the way.
290 - Coffee Rings - In cleaning the counters, I noticed a coffee
spill that had dried. It had formed a dark ring, with almost no coffee stain
in the center. This reminded me of an article that I have read on the
science behind coffee rings, giving me the idea for this week's experiment.
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