NMDHS Marauders

An Australian high voltage site with 200 projects

Author: R.W. Fyfe, Found Date:October 1st 2009,

In this documentary, Professor Jim Al-Khalili sets out to uncover one of the great mysteries of science - how does a universe that starts off as dust end up with intelligent life? How does order emerge from disorder? It's a mind bending, counter intuitive and for many people a deeply troubling idea. But Professor Al-Khalili reveals the science behind much of beauty and structure in the natural world and discovers that far from it being magic or an act of God, it is in fact an intrinsic part of the laws of physics. Amazingly, it turns out that the mathematics of chaos can explain how and why the universe creates exquisite order and pattern.

CARWeb - The Canadian Association of Rocketry

Determine the stability of your rocket by calculating the center of pressure - with spreadsheet example.

15 Best Foods to Boost Your Metabolism

On the physics and mechanics of a medieval trebuchet, a type of catapult, its design, working and optimization through improved simulation and mathematical analysis.

Three Korean girls on a traditional see-saw (널뛰기) doing some extreme acrobatics

Boiling and freezing water through changes in pressure

"In particular, rapid swings in the density of plants and fleas indicated the food web was unstable and about to change. The idea that such early warning signals ought to exist is not new - but the researchers say this is the first time it has been demonstrated experimentally. "For a long time, ecologists thought these changes couldn't be predicted," said research leader Stephen Carpenter from the University of Wisconsin in Madison, US. "But we've now shown that they can be foreseen. The early warning is clear; it is a strong signal.""

"The first monogamous amphibian has been discovered living in the rainforest of South America."

"The upper layer of the world's ocean has warmed since 1993, indicating a strong climate change signal, according to a new study. The energy stored is enough to power nearly 500 100-watt light bulbs per each of the roughly 6.7 billion people on the planet."

"Historically, scientists have focused on breeding useful traits such as disease resistance from African rice into Asian rice. Now the focus is on the reverse -- using African rice as the basic crop and improving it with Asian genes. "African rice was initially ignored by mainstream research," said Koichi Futakuchi, a scientist at Africa Rice Center (AfricaRice) in a statement."

CH'YEAH! CH'YEAH! BIIRACK! BIIRACK!

In a perfect world, you could enjoy great sound by installing just four full-range speakers - one in each corner of your car. In the real world, things aren't quite that easy. Full-ranges simply aren't up to the task of accurately reproducing the entire music spectrum. That's why top-notch systems employ two or more component speakers - like a woofer and tweeter - per channel. Each component is designed to reproduce a specific range of frequencies, and together they can cover the entire music spectrum accurately.\n\nA complication arises, however, since source components such as CD players deliver all of these frequencies - low, high, and in between - as a single music signal. This is where crossovers come in. A crossover divides the music signal into frequency bands that are compatible with the different types of component speakers.

"On Nutrition Data, you'll find detailed nutrition information, plus unique analysis tools that tell you more about how foods affect your health and make it easier to choose healthy foods."