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Topic: velocity
Raindrops: What do they really look like?
When you draw raindrops, how do you draw them? Are they tear-shaped with the point at their tops? Is that really what raindrops look like? Dr. Joe Hanson asked that very question. He then tested what happened to water...
Newton’s Three Laws of Motion
Follow four astronauts on a six month journey from Earth to Mars, and see how Newton’s Three Laws of Motion -- 'Newton' referring to English physicist and mathematician Sir Isaac Newton -- can help us understand and p...
Circular motion demonstration with a sparkler & a hula hoop
From physics teacher and film maker Alom Shaha, check out these simple demonstrations showing how something moving in a circle will move in a straight line when you remove the centripetal force acting upon that thing....
General relativity & why GPS wouldn’t work if we didn’t know about it
General relativity, what Albert Einstein said was the happiest thought of his life, basically expands upon the idea that "the laws of physics are the same everywhere". Light and gravity behave in the same way for you....
Andrew Gatt’s Ultimate Paper Roller Coaster
Perfect for the classroom or at home, Andrew Gatt's paper roller coasters are not only fun, but they also teach so many lessons in engineering, construction, teamwork, trial and error, and more. In exploring physics a...
The Stacked Ball Drop (and Supernovas) – Physics Girl
How is a supernova like a basketball, a bouncy ball, and a golf ball all stacked together? It's all in what happens when you drop them. In this video, Physics Girl Dianna Cowern demonstrates the momentum transfer betw...
What makes that fresh rain smell? MIT films rain drops to find out
Why do we smell that fresh earthy scent before and/or after it rains? With high-speed cameras, MIT researchers have filmed rain drops, and believe that the footage explains petrichor, the "pleasant smell that frequent...
How to make a Crazy Pool Vortex – Physics Girl
Have a plate, a pool, and some food coloring? In this experiment, Physics Girl Dianna Cowern makes strange black circles form by briefly dragging a plate through the pool. On a sunny day in still water, those black ci...
Midget Motor Mania!
Midget Motor Mania! With some history from Jalopy Journal: Great pre-war tether car footage brought to you via Newsreel (as shown at the front of movies in the theater) from October of 1940. At this fairly early...
Andrew Gatt’s Paper Roller Coasters
Mixing physics, engineering, paper and what looks like some seriously rewarding folding, cutting and taping DIY, Andrew Gatt builds incredibly sturdy paper roller coasters out of heavy paper s...
Veritasium: How Far Away is the Moon?
Veritasium's Derek Muller asks and answers: How Far Away is the Moon? (The Scale of the Universe) It takes the moon about 27 days to orbit the Earth. What makes it go round? It is the g...
