Physics and math

Scientific research reveals how to win at Rock-Paper-Scissors

Regular visitors to Reeko’s Mad Scientist Lab know that on occasion, Reeko likes to pull their leg (meaning he tricks them). Reeko doesn’t do this to confuse the little scientists but rather, to make sure they stay on their toes (meaning walking around on your toes makes it harder to have your leg pulled). What follows is a true news story and not one of Reeko's sneaky tricks. Chinese discover there is more to Rock-Paper-Scissors than meets the eye Scientists in China have studied the Rock-Paper-Scissors game and released findings that indicate the game is more than a simple game of chance. Indeed, there is a strategy that can be used to win at Rock-Paper-Scissors. Seriously, we’re not making this stuff up. We could discuss the…
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Pressure

Build a real working hovercraft!

Build a real working hovercraft! So you want your very own hovercraft. Well once again, Reeko is here to help. Of course it's only big enough to hold a mouse (maybe two if the first one scrunches down real low) but hey, we're not old enough for a driver's license Cut a 4 inch square out of the cardboard. Punch a hole in the cardboard - you may need to get an adult to do this part. If you attempt it yourself be very careful. Make sure you punch the hole in the center of the cardboard. The hole should be the same size as the hole in the spool. Glue the spool to the cardboard on top of the hole. Make sure you glue…
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Geometry

Where inside and outside are one and the same

Mobius strip experiment Think you've seen it all. Just when you thought you understand the simple little concepts like up and down, forwards and backwards, and inside and outside, Reeko comes along and throws a curve ball at ya' - in this case, a curved piece of paper that will blow your mind. Cut a 2 inch strip of paper. Holding the strip out straight, give it a half twist (180 degrees) and attach the two ends together. Take a pen and draw a line along the center of the strip. Surprised? Where do you end up? Is the line drawn on the inside or outside of the paper? Now cut the strip along the line you drew. How many chains do you get? Your…
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Chemistry

Invisible ink

Make your own invisible ink Invisible ink has been used by spies for centuries. At the time of the Revolutionary War, invisible ink made of a mixture of ferrous sulfate and water was commonly used. The secret messages were often written in between the lines of a normal letter. When heat or a special chemical (such as sodium carbonate) were applied, the message that was placed in between the lines would appear. In modern times, inks containing special properties are used and require viewing under ultraviolet (UV) light to see the message. Put some lemon juice in a bowl and mix with a few drops of water Wet a cotton ball and use it to write a message on a blank piece of white paper…
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