background preloader


Facebook Twitter

The Hindu : Health : Breakthrough: sensors that can convert thoughts into speech. A mind reading machine has edged closer to reality after scientists found a way of converting thoughts into words. Researchers were able to render brain signals into speech for the first time, relying on sensors attached to the brain surface. Melting Steel With Only the Sun (Video)

Photo: Youtube screen grab.

Melting Steel With Only the Sun (Video)

See video below. Steel's Melting Point is Approx. 1,370 °C (2,500 °F) Melting steel in a solar oven (aka solar concentrator) isn't new or unique, but it's always cool to see and a good reminder of just how much energy is hitting the sunny side of the planet at any moment. The video below shows a short exerpt of James May's "Big Ideas" series (James is better known for the Top Gear show), and they start by cooking, er, burning a sausage, and then they melt a steel plate. Electrolux Design Lab 2010 Eight Finalists Reviewed. This illusion will drive you mad. What you burn. Next: What comes outUp: The Rubber Bag Previous: What goes in ``What you burn'' is the number of calories your body uses to provide the energy for everything you do, from heartbeats and breathing to running a marathon.

What you burn

The daily calorie requirement varies quite a bit from person to person depending on size, shape, basic metabolic rate, and degree of physical activity. A rough estimate of calories per day can be obtained by multiplying the ideal weight for your height and body type by a number based on your level of physical activity, ranging from 11 for a pure couch potato to 17 for a person engaged in heavy physical labour or strenuous exercise on a daily basis. The following tables give estimates of the calories burned per day for men and women at their ideal weight, based on height and body type. Height in these tables is your barefoot height. Daily calories burned: Men Daily calories burned: Women. Cell Size and Scale. Some cells are visible to the unaided eye.

Cell Size and Scale

BioMotionLab. A Sense of Scale: Absolute Zero. By Glenn Elert Posted 01.08.08 NOVA At roughly minus 460°F, absolute zero is abysmally cold, yet at least we can imagine it.

A Sense of Scale: Absolute Zero

Being only a few hundred degrees below zero, it's in the realm of something we can put our minds around. This is not true of the opposite of absolute zero, the theoretical highest possible temperature. In conventional physics, this is approximately 100 million million million million million degrees. Interesting High-speed Video Clips. The video clips below were filmed with a special high-speed camera .

Interesting High-speed Video Clips

The super slow-motion playback lets you visualize effects that cannot be seen with the naked eye or with a standard video camera. {*style:<b><i>NOTE: No humans or animals were hurt during the filming of any of these clips. Also, all humans (and my pet dog) were willing and eager participants. Any discomfort was willingly accepted in the interest of science. DIY Skylights From Used Water Bottles Replace 50-Watt Bulbs. Image via YouTube video.

DIY Skylights From Used Water Bottles Replace 50-Watt Bulbs

Watch out if your daddy likes physics... Map of the World Drawn Entirely Using Facebook Connections. Aerogel: See-Through, Strong as Steel & Ligher than Air. Despite its incredibly low density, aerogel is one of the most powerful materials on the planet.

Aerogel: See-Through, Strong as Steel & Ligher than Air

It can support thousands of times its own weight, block out intense heat, cold and sound – yet it is 1,000 times less dense than glass, nearly as transparent and is composed of %99.8 air. The lowest-density silica-based aerogels are even lighter than air. Despite its fragility in certain regards and its incredible lack of density, aerogel has amazing thermal, acoustical and electrical insulation properties as illustrated by the images here. A single one-pound block can also support half a ton of weight. NASA continues to find new space-based applications for this incredible material.

An aerogel window one inch thick has the effective insulative capacity of a ten-inch thick glass window system. See How It Flies. First 3D Map of the Brain’s Connections. InnerSuper. Scientists Create World’s 1st Practical Artificial Leaf, 10X as Efficient as the Real Thing.

True-size-of-africa.jpg (2482×1755) Simple animation to explain complex principles - Electronics. 1, aircraft radial engine 2, oval Regulation 3, sewing machines 4, Malta Cross movement - second hand movement used to control the clock 5, auto change file mechanism 6, auto constant velocity universal joint 6.gif.

Simple animation to explain complex principles - Electronics

Science News: Nanoguitar. Photo by D.

Science News: Nanoguitar

Infographic: Tallest Mountain to Deepest Ocean Trench. Eric Giler demos wireless electricity. Humansanddinos_tr2_png_800x1000_q100.png (800×570) Chunnel Vision. In the 1860’s, the British and French first began thinking about building a 30-plus mile tunnel under the English Channel to connect their two countries. The engineering companies estimated that it would cost over $10 million (U.S.) to complete– not a small piece of change 150 years ago. Teenagers' brains 'can resist temptation'