The Galton Board is a 7.5” by 4.5” desktop probability machine. This device brings to life the statistical concept of normal distribution.
As you rotate the Galton Board... continue reading
posted by Aard Vark (oritteropo) 10 months 1 week ago • 794 views • 3:23
I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading
posted by Mordhaus1 year 4 months 2 weeks ago • 442 views • 5:46
"... The pigments in our food all get destroyed on their way through our digestive system...so where do the colors of our poop and pee come from? ..."
This old ant poops and pees, of many colo(u)rs... continue reading
posted by ant1 year 7 months 2 weeks ago • 18 views • 2:51
Why so many languages invented words for colors in the same order.
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In 1969, two Berkeley researchers, Paul Kay and Brent Berlin,... continue reading
posted by Aard Vark (oritteropo) 1 year 10 months ago • 608 views • 6:45
Published on Nov 6, 2016
Urine is mainly water (at least 95 percent), but the rest is a surprisingly complicated brew of components that include urea, chloride, sodium, potassium, creatinine and other... continue reading
posted by bobknight332 years 2 months 3 weeks ago • 21 views
The materials collection, at the Harvard Art Museums in Cambridge, MA, houses thousands of pigments, including some of the world’s rarest. Dragon's blood, mummy, Indian yellow: these are but a few flashy... continue reading
posted by blacklotus902 years 11 months 1 week ago • 581 views • 2:35
An interesting riddle - can you sifters solve it, without resorting to the solution in the video (from 1:25)?
iflscience: The following riddle is claimed to have been written by Einstein as a boy. It's... continue reading
posted by Zawash3 years 6 months 1 week ago • 50 views • 5:08