How do levitating street performers work?
- Critical Thinking, Environment, History, How Stuff Works, Magic/Illusions, Optical Illusions, Today I learned...
- October 21, 2018
I found myself in a difficult situation the other day: explaining the multiplication of two negative numbers to my 8 year old. Negative numbers are rather simple to illustrate when using temperature because there is a clearly visible “zero” Celsius and numbers on either side of it. Living in Canada, we can see dramatic fluctuations
READ MOREDoes 0.999 (repeated) equal “one”? You might be surprised by the answer… which is “yes“. I heard this on a couple of podcasts over the last few months, and I still find it hard to accept at face value. However, I am now convinced and here’s several simple proofs that .99999 does indeed equal 1…
READ MOREFormally, Pi is a mathematical constant whose value is the ratio of a circle’s circumference to its diameter (Pi = C/d). It’s also the same ratio of a circle’s area to its radius (Pi = A/r^2). Pi is an irrational number, meaning it cannot be referenced exactly as a fraction, but only as a decimal which never
READ MOREYou are probably reading this article online. In that case, you may not know it but you have a seventeenth-century Frenchman to thank for this experience. Blaise Pascal may not have known anything about the internet, but it is thanks, in no small part, to his precocious genius that we are able to do what we do
READ MORE