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Can you change the color of oudin coil sparks?
Can you change the color of oudin coil sparks?

An Oudin coil can take the energy out of your outlet and create sparks you can see! It’s sometimes called a mini tesla coil. The sparks on them usually look violet. If you know the visible light spectrum, you might know that violet light is the most energetic color of light.  The oudin coil looks

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Stellar Evolution Part 3: Supergiant and Supernova
Stellar Evolution Part 3: Supergiant and Supernova

Most stars on the main sequence are relatively average: not too big and not too small. But every so often, a star begins its life as an absolute monster: a supergiant. These supergiants do join the main sequence, but due to the sheer amount of gravitational force and pressure, they burn through the hydrogen in

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Stellar Evolution Part 2: Main Sequence Stars
Stellar Evolution Part 2: Main Sequence Stars

When a protostar’s core reaches 15,000,000 degrees Celsius, nuclear fusion begins in its core. This ignition marks the star’s birth as it becomes a main sequence star. Main sequence stars have a ton of variety. They range from cooler red stars to hotly burning blue ones, and their size can range from a fraction of

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Stellar Evolution Part 1: Nebulae and Protostars
Stellar Evolution Part 1: Nebulae and Protostars

In the vast emptiness of space, there are floating clouds of gas and dust called nebulae. These clouds are stellar nurseries, filled with material that will one day become multiple solar systems. When part of a nebula is slightly more densely packed than the rest, gravity is stronger in that region. It begins to pull

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Making Nitrogen Balloons Float
Making Nitrogen Balloons Float

When you blow up a balloon with your breath, you’re filling it with a mixture of nitrogen, oxygen, and a little bit of carbon dioxide. And when you let go of it, it falls down to the floor. Why does it do this? And how could we prevent it from doing so? Think of it

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