- Equations reveal rebellious rhythms at the heart of nature
- How does a soccer ball swerve? Smoothness of a ball's surface, in addition to playing technique, is a critical factor
- Can we see the arrow of time? Algorithm can determine, with 80 percent accuracy, whether video is running forward or backward
- Limb regeneration: Do salamanders hold the key?
Posted: 20 Jun 2014 09:03 AM PDT
Physicists are using equations to reveal the hidden complexities of the human body. From the beating of our hearts to the proper functioning of our brains, many systems in nature depend on collections of 'oscillators'; perfectly-coordinated, rhythmic systems working together in flux, like the cardiac muscle cells in the heart.
Posted: 19 Jun 2014 06:06 PM PDT
It happens every four years: The World Cup begins and some of the world's most skilled players carefully line up free kicks, take aim -- and shoot way over the goal. The players are all trying to bend the ball into a top corner of the goal, often over a wall of defensive players and away from the reach of a lunging goalkeeper.
Posted: 19 Jun 2014 02:26 PM PDT
Einstein's theory of relativity envisions time as a spatial dimension, like height, width, and depth. But unlike those other dimensions, time seems to permit motion in only one direction: forward. This directional asymmetry -- the "arrow of time" -- is something of a conundrum for theoretical physics.
Posted: 19 Jun 2014 09:52 AM PDT
The secret of how salamanders successfully regrow body parts is being unravelled by researchers in a bid to apply it to humans. For the first time, researchers have found that the 'ERK pathway' must be constantly active for salamander cells to be reprogrammed, and hence able to contribute to the regeneration of different body parts.
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