Tag «computers»

What on Earth is Recursion? – Computerphile

What on Earth is Recursion? – Computerphile

I think I’m on fairly strong ground when I say that we haven’t yet, in Computerphile, done recursion. This can get extremely hard. It is difficult to get your head around recursion, sometimes. In one way you can take a very mathematical view about it and close your eyes, and if you’re a pure mathematician …

How Chaos Theory Unravels the Mysteries of Nature

If someone showed you a swinging pendulum—like this and asked you to calculate the pendulum’s position at some point in the future, you might think it’d be relatively simple. We should be able to predict that with the known laws of motion, right? But this calculation is actually so complicated that it requires a relatively …

Plants and Ozone Pollution with Dr. Danica Lombardozzi

Plants and Ozone Pollution with Dr. Danica Lombardozzi

Scientists at NCAR’s Climate and Global Dynamics Laboratory are studying the Earth system. Dr. Danica Lombardozzi, who studies terrestrial ecosystems, tells us more. I’ve been working here at NCAR for the past seven years. I started as a post-doc and I currently work as a project scientist. What type of science is being done in …

Skyfall! Y2K vs Global Warming

Skyfall! Y2K vs  Global Warming

Some recent studies are sounding the alarm about climate change. The authors of these studies are claiming that hundreds of American cities will be largely uninhabitable within as little as 20 years! They’re forecasting chronic and catastrophic flooding in many coastal areas. Should we panic? I think not. Instead, we should do a little analytical …

Brandon Lucia: Energy Harvesting Computers: Extracting Energy from the Environment

Brandon Lucia: Energy Harvesting Computers: Extracting Energy from the Environment

In my lab, we’re developing the basic technology to support what are called “energy harvesting computers.” These are devices that can perform computations, sense their environments, and communicate using energy that they extract from their environments. We can make devices harvest radio waves or use solar energy. By powering these devices with energy extracted from …