Over the last few decades, physicists have come to realize that about 90% of the mass of every galaxy in the universe is made of an unseen substance called dark matter.

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Quantum physics is considered by many to be the single most important advance in our understanding of the universe. This video introduces you to quantum physics via the double-slit experiment and the concept of wave-particle duality.

Where does technology come from? Find out how the four key scientific concepts of electromagnetism, relativity, and quantum mechanics have empowered us to engineer technology.