Pop quiz. How did Einstein win his Nobel prize? Was it for relativity? Nope, Einstein won the Nobel Prize in 1921 for the discovery of the photoelectric effect; how electrons are emitted from atoms when they absorb photons of light. But what is it? Let’s find out.
The Oxford Dictionary of National Biography podcast doesn’t have an exciting format—it consists of professional readings of O.D.N.B. entries. But the podcast producers obviously like picking out quirky subjects to share with listeners. Show More Summary
Around this time last year a space rock crashed into the Earth above Chelyabinsk, Russia. It brightened the skies for hundreds of kilometers, broke windows and injured many people. Let’s look back at the event. What happened, and what did we learn?
Just take a look at the surface of the Moon and you can see it experienced a savage beating in the past. Turns out, the whole Solar System is a cosmic shooting gallery, with stuff crashing into other stuff. It sure sounds violent, but then, we wouldn't be here without it.
Out here in the Milky Way’s suburbs, stellar collisions are unheard of. But there are places in the galaxy where stars whiz past each other, and collisions can happen. When stars collide, it’s a catastrophic event, and the stellar wreckage is visible half a galaxy away.
As I posted last Sunday, I was on ABC local radio (Adelaide 891 AM) with Ashley Walsh starting 11:40 am ACDST. However, I didn't post until AFTER the show, so people who might have been interested missed out (so much for self-promotion).Well, it turns out they recorded the session, and it is up on the Weekends Blog. Show More Summary
Lost in the stacks bills itself as “the one-and-only research-library rock’n’ roll radio show”. Every Friday, they broadcast a one-hour show on WREK Atlanta, where they chat about research-library issues and play tenuously relevant songs. Show More Summary
In our previous episode, we introduced Arthur C. Clarke, the amazing man and science fiction writer. Today we’ll be discussing his legacy and ideas on space exploration. You’ll be amazed to hear how many of the ideas we take for granted were invented or just accurately predicted by Arthur C. Clarke.
Arthur C. Clarke was one of the greatest science fiction writers of all time. He defined the genre, and revolutionized our ideas about what it will take to become a true space faring civilization. In the first of our two part series on Arthur C. Clarke, we examine the man’s life and his books.
BBC Crossing Continents episode on "the Diggers" who find unburied war dead in Russia. http://downloads.bbc.co.uk/podcasts/radio4/cc/cc_20140109-1115a.mp3 hat tip to Jacek Górecki
As we’ve said before, all telescopes really want to be in space. In part 3 of our series on amateur telescope making, we bring you up to speed on the final frontier: amateurs building space telescopes. The hardware and software is available off the shelf, and launches have never been more affordable. The era of amateur space telescopes has arrived.
@In Our Time With Melvyn Bragg IOT: Plato’s Symposium 02 Jan 14 Download: iot_20140102-1030a.mp3
Some astronomers are control freaks. It’s not enough to buy a telescope, they want to craft every part of the experience with their own hands. If you’re ready, and willing to get your hands dirty (and covered in glass dust), you can join thousands of amateur telescope makers and build your own telescope from scratch.
The Universe is filled with hot fusion, in the cores of stars. And scientists have even been able to replicate this stellar process in expensive experiments. But wouldn’t it be amazing if you could produce energy from fusion withoutShow More Summary
When you consider the hazards of spaceflight, it’s hard to get worked up about dust bunnies. And yet, atmospheric dust is going to be one of the biggest problems astronauts will face when they reach the surface of other worlds. Where does this dust come from, and what does it tell us about the history of other worlds, and what can we do to mitigate the health risks?
Why pick up a low quality, wobbly telescope from the department store when you can craft your own - just like Galileo, and all the great astronomers from history. For a minor investment, you can build a worthy telescope out of spare parts and high quality kits.
Comets can spend billions of years out in the Oort Cloud, and then a few brief moments of terror orbiting the Sun. These are the sun grazers. Some survive their journey, and flare up to become the brightest comets in history. Others won't survive their first, and only encounter with the Sun.
@In Our Time With Melvyn Bragg IOT: Pliny the Younger 12 Dec 13 Download: iot_20131212-1120a.mp3
The number of protons defines an element, but the number of neutrons can vary. We call these different flavors of an element isotopes, and use these isotopes to solve some challenging mysteries in physics and astronomy. Some isotopes occur naturally, and others need to be made in nuclear reactors and particle accelerators.
A new series of BBC Radio 4?s All in the Mind has just kicked off and to celebrate 25 years of broadcasting they’ve just had three great episodes looking back on the last quarter century of psychology, neuroscience and mental health. Each make for a interesting discussion of how science and attitudes have changed. As […]