Posts Tagged: physics

How many atoms does it take for an element to become visible to the naked eye?

Let’s jump right in on this and start with the diameter of an atom. Atoms measure from 0.1 to 0.5 nanometers (nm) across (0.1 nm written out fully is 0.0000000001 metres). You won’t be surprised to hear that humans can’t

How many atoms does it take for an element to become visible to the naked eye?

Let’s jump right in on this and start with the diameter of an atom. Atoms measure from 0.1 to 0.5 nanometers (nm) across (0.1 nm written out fully is 0.0000000001 metres). You won’t be surprised to hear that humans can’t

How does radar work?

RADAR stands for Radio Detection And Ranging: a fairly accurate description of what it actually does. Radar systems use radio waves to find out the distance of an object, its speed and direction, and its height. You’ll have experienced something

How does radar work?

RADAR stands for Radio Detection And Ranging: a fairly accurate description of what it actually does. Radar systems use radio waves to find out the distance of an object, its speed and direction, and its height. You’ll have experienced something

Quantum: Einstein, Bohr and the Great Debate About the Nature of Reality

I’ll admit it: if you haven’t come across quantum theory before, this book is not for you. Manjit Kumar’s book covers the history of quantum theory, with all the arguments and debates that came with physics’ greatest conundrum: could Newton

Quantum: Einstein, Bohr and the Great Debate About the Nature of Reality

I’ll admit it: if you haven’t come across quantum theory before, this book is not for you. Manjit Kumar’s book covers the history of quantum theory, with all the arguments and debates that came with physics’ greatest conundrum: could Newton

How big would a comet have to be, to be able to collide with the sun?

Asked by Tobias, Copenhagen The basic answer to this question is simple: any size of comet – or any other object floating around in space – can end up colliding with the Sun. A lot of comets manage to avoid

How big would a comet have to be, to be able to collide with the sun?

Asked by Tobias, Copenhagen The basic answer to this question is simple: any size of comet – or any other object floating around in space – can end up colliding with the Sun. A lot of comets manage to avoid

/ News

New gravitational evidence makes waves as proof of the Big Bang

It would be hard to keep up a Physics blog and not write about this most recent story, although I admit I’m a little behind the rest. Researchers believe that gravitational wave signals are proof of a key component of

/ News

New gravitational evidence makes waves as proof of the Big Bang

It would be hard to keep up a Physics blog and not write about this most recent story, although I admit I’m a little behind the rest. Researchers believe that gravitational wave signals are proof of a key component of

There’s now an LED that’s only 3 atoms thick

This is just crazy: a team of scientists from the University of Washington have created an LED (light-emitting diode) that’s only 3 atoms thick. The light emitted can be picked up by standard light-measuring equipment, too. LEDs are basically semiconductors,

There’s now an LED that’s only 3 atoms thick

This is just crazy: a team of scientists from the University of Washington have created an LED (light-emitting diode) that’s only 3 atoms thick. The light emitted can be picked up by standard light-measuring equipment, too. LEDs are basically semiconductors,

/ News

Kepler finds almost double the number of previously-discovered planets

In one truly amazing sweep, the Kepler Telescope has confirmed the existence of 715 new planets outside our Solar System, nearly doubling the previous findings of just over 1,000 “exoplanets” (some of which were also made by Kepler, earlier on).

/ News

Kepler finds almost double the number of previously-discovered planets

In one truly amazing sweep, the Kepler Telescope has confirmed the existence of 715 new planets outside our Solar System, nearly doubling the previous findings of just over 1,000 “exoplanets” (some of which were also made by Kepler, earlier on).