We're analysing the matter of antimatter this week to find out what is antimatter, how is it made and why's it so rare in the Universe? We talk to researchers at CERN who are capturing anti-hydrogen so scientists can study it properly for the first time, and Dave and Meera call in to the hospital to hear how antimatter holds the key to better body scans. Diana discovers how gravity bends a beam of light and there's also news of a novel way to neutralise HIV, researchers uncover how brains gauge the passage of time, and agriculture on the microscale: scientists have found the world's smallest farmers, they're just one cell wide...
Listen Now
Download as mp3
m4a or Subscribe Free
A new study this week has found that, in order to keep track of time, our minds exploit as many clues in the environment as they can get hold of. This means that our internal clock isn’t solely controlled by pre-programmed cells in the brain...
A mouse given a human immune system has enabled scientists to take the first steps in testing a new treatment for HIV, the immune-disabling agent that causes AIDS...
Researchers at Imperial College in London have discovered an unusual process which is happening in a contagious form of cancer that infects dogs called canine transmissible venereal tumour or CTVT. This cancer spreads via physical contact and the study found that the cancer cell...
Researchers this week have found that, for fact-based subjects, practising a retrieval exercise produces better test results than concept mapping.
There are many examples of organisms engaging in agriculture in the natural world, ranging from humans that grow wheat to leaf-cutting ants that nurture edible forms of fungi. But now scientists have discovered what is possibly the smallest of nature's farmers - a single-celled ...
Coral reefs are regarded as the rainforest of the sea. They play a vital role in marine ecosystems and now, a new reef research unit at the University of Essex in Colchester has been setup to study them and Planet Earth presenter Sue Nelson has been to meet the Assistant Direct...
Antimatter is usually thought of as being rather mysterious. But in fact, it is much more abundant than you might think and it may well be the key to explaining some of the mysteries that surround the Big Bang. We’re joined by Professor Andy Parker from the High Energy Physics...
In November 2010, researchers at CERN announced that they had managed to make and trap the antimatter equivalent of hydrogen, so-called antihydrogen. We spoke to Jeffrey Hangst, one of the scientists behind that breakthrough.
Meera and Dave explore how PET and MRI scanners can combine to give a better look at what's going on inside us....
How much energy is released when a positron and an electron collides? I mean in practical terms. Cheers!
Can antimatter combine with other matter chemicals, just in the same way matter does? So if you took hydrogen and reacted it with hydrogen to make H20, water for instance?
If you fire an electron and a positron towards each other such that they just miss, would they orbit each other in such a way as to produce observable gravitational waves?
Side notes: My physics understanding has mostly been gained from what I learn in school (I'm in year 12). R...
In PET scans, you get these positrons as we heard are from radioactive decays. How do you make sure that they annihilate the electrons in your body and not in the stuff that's around your body and therefore, create false signals?”
Matter and matter attract each other. What about matter and antimatter? They repulse? Also attract?
How do we detect antimatter in space? What are you actually looking for?”
Matter and antimatter aren't 100% symmetric. i.e. CP violation. How is anti-universe, if exists, different from universe?
Hi,
I've read that when matter/antimatter interact they annihilate each other...
As matter cannot be created/destroyed - how do they annihilate?
Shane
If light is massless, how does it bend due to gravity?
Related Content
Comments
