Author: George Hulsey

Separating Salt & Pepper with Balloons

Contributed by Shubhang Tyagi Introduction  Do you want to be able to control minuscule particles like salt and pepper? Do you have hair? If you answered yes to both of these questions, you are in luck. A physics phenomenon in electrostatics allows us to use out hair to control salt and pepper!  Materials  Balloon Salt…
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Clouds from bottles: a twist!

Contributed by Alan Feria Check out part 1 of “Cloud in a Bottle” by clicking the highlighted text. Introduction  Have you ever wondered why some days we have clouds, fog, rain, or a bright & sunny sky with no clouds at all? Well look no further than this at home demonstration that will explain to…
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Communicating with Light

Contributed by Jon Luntzel Introduction How do you hear your friends when you’re talking to them on the computer, gaming, on the phone? How come messages can go so quick even though the earth is so big? How can a device we’ve built keep track of a signal, when there’s so much information in it?…
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Crushing Soda Cans with Air Pressure

Contributed by Pinrui Pan Introduction: Wanna surprise your friends with a soda can implosion and brag about your ability to harness the Force like Darth Vader? Sadly, there is no such thing as the Force in the real world, but with physics, we could still create the implosion drawing power from something invisible: the atmospheric…
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Buoyancy with 2 Liquids

Contributed by Merlin Ling Introduction This experiment tries to build an understanding of buoyancy from the ground up, all the way to the interesting and somewhat unintuitive behavior of floating between two liquids. What is buoyancy? When you push on water, it pushes up. Why does water do that? To understand this, we must first…
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Electrical Circuits: Switch It!

Contributed by Montu Ganesh Introduction In an electrical circuit, what happens when I open and close a switch? What happens when 2 light bulbs are connected in series with each other? What happens when one switch goes off in a series circuit? What happens when 2 light bulbs are connected in parallel with each other?…
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Hair Dryer Levitation

Contributed by Alec Clark Introduction: If you drop a table tennis ball on a powered hair dryer and tilt that hair dryer to the side, you might expect the ball to drop or fly away. However, could you imagine the ball levitating in place? Materials: A table tennis ball A hairdryer (be careful, these can…
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How do craters form?

Contributed by Ezequiel Contreras Martinez Introduction Take a quick glance at the moon. Can you see all the circular shapes all across the face of the Moon and the lines extending from them? Those, in fact, are what planetary scientists call the “craters” and the “ejecta rays” that extend from them – which are all…
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Breaking Magnets

Contributed by Sabrina Brickner Introduction How do magnets work? What happens when you break a magnet in half? Do you get a magnetic monopole (a magnet which is only north or only south and not both)? Materials A few magnets (bar shape is ideal) A thin piece of paper Procedure Take two magnets and put…
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Water Pressure

Contributed by Yutao Zhou Introduction: If you puncture a bag full of water, will it leak? What if I told you that little, if any, water would escape? Materials One food storage bags (available in groceries store or online) Two sharpened pencils Be careful with the sharpened pencils! They are sharp. Only do this experiment…
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