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How to Measure the Density of an Unknown Material
Density is an inherent property of any material. Regardless of how much of it there is, or what shape it’s in, a material will always have the same density. Knowing the density of an item can help identify what something...
Preparing an Agar Plate
Agar plates are used in microbiology to grow and culture bacteria for study. The agar is a gelatin that acts as a surface and a source of nutrients for the bacteria colonies to grow on. Scientists will use different ingredients...
How Good is My Graaff?
So you have a Van de Graaff generator and you want to know how good it is? (Yes, that’s two ‘a’s and two ‘f’s after Robert J. Van de Graaff, the inventor). Well, turns out the proof is in the electrical pudding, or rather the electric arcs the Van de Graaff generator can create. I’m not lying! The voltage of a Van de Graaff generator can be measured by its ability to shock you!
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