What Is Electricity? (Are You Gonna Be My Girl?)

Go!! 1,2,3 a song about ‘lectricty because it powers our lives, makes it possible for us to thrive because it powers our lives, makes it possible for us to thrive Oh, 4, 5, 6, volts of potential difference makes electrons go round if the circuit is complete and sound Circuit’s closed Voltage There Current Flows […]

How Do Sharks and Rays Use Electricity to Find Hidden Prey? | Deep Look

We live in a world full of electric fields. Animals, plants — even the earth itself — creates them. But only a handful of creatures can actually sense them. Sharks — also rays and skates… a whole group, animals called elasmobranchs — can actually detect electricity Maybe it’s like feeling the presence of someone hiding […]

How to Launch a Nuclear Missile

During the Cold War the US and the Soviet Union had to build underground silos to house nuclear missiles that could be launched at a few minutes notice. Now, one of the technical challenges they had to overcome that you might not think of is acoustics. Launching a missile in such a confined silo generates […]

Why graphene hasn’t taken over the world…yet

– [Cory] It may not look like it, but I’m creating one of the strongest and most versatile materials on Earth, graphene. You’ve probably heard buzz about it. Graphene made big waves back in 2004, and it’s knocked around science news ever since. – A global race for graphene. – You know, it’s not just […]

Why Seasons Make No Sense

[INTRO MUSIC] Every year on February 2nd, the people of Punxsutawney, PA dress up like it’s 1886, pull a groundhog named Phil out of a box and ask him when winter will end. Not surprisingly, meteorologically-inclined marmots are not reliable predictors of spring. [INTRO MUSIC] But why divide the year into seasons in the first […]

Why Einstein Thought Nuclear Weapons Impossible

Now that we have nuclear weapons and nuclear power plants you might think that it was always Inevitable that we would be able to harness the energy inside the nucleus of atoms But that was far from the case in fact serious scientists, thought the idea was laughable like Nobel laureate Robert Millikan who in […]