Spectrometers are used, like prisms, to spread light out into the component colours. This enables us to understand the compositions of everything from stars to streetlights. Here I show you how to make your own spectrometer and give you a few examples of what you can see with it.

Another physics experiment you can perform in your kitchen. This time let’s crush a can using just pressure. We will create a vacuum and then see how powerful air pressure can be. Oh and we crush things!

Using the microwave oven in your kitchen, you can measure a fundamental property of the universe: the speed of light. All you need are some tasty marshmallows and a ruler.