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Found in the Rio Colorado region of Argentina, the fossilized remains of a dinosaur called Aerosteon Riocoloradensis may aid scientists track the evolution of birds' breathing systems.Jeffrey Wilson and his team of paleontologists from the University of Michigan took part in dinosaur specialist Paul Sereno'... |
1 October 2008
08:54 GMT |
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Halogen light bulbs are incandescent lamps with construction and operation roughly similar to the classical light bulbs. They are generally much smaller than their 'cousins', have increased lifetimes and are able to produce high light outputs with elevated color temperatures, as opposed to all other types o... |
30 July 2008
09:09 GMT |
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Researchers recently invented a new type of compounds, called thermoelectric materials, which could make internal combustion engines and other devices that lose most of the energy they produce through heat more efficient by directly converting the extra amount of thermal energy into electricity. Thermoelectric materi... |
25 July 2008
06:03 GMT |
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The Crookes radiometer is a light mill consisting of a set of fins placed on a spindle that rotates inside a partially vacuumed glass bulb when exposed to light. The rotation speed is directly related with the intensity of the electromagnetic radiation, while the rotation direction depends on the temperature of the e... |
19 July 2008
07:08 GMT |
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Microwave ovens heat up food by generating an electromagnetic wave with an alternating electric component. As the wave interacts with molecules of water in the food, having a positive charge at one end and a negative one at the other, it forces them to rotate and align with the electric field. At the same time, other... |
17 July 2008
06:11 GMT |
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There is no reason why other rocky planets in the universe should not be able to support life, but a considerable amount of time will pass before a planet such as our own is found in the galaxy, mostly because of its relatively small size. So far, a couple of hundred of planets have been discovered by astronomers, or... |
12 July 2008
03:56 GMT |
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Nearly 300 million years ago, the world's last known supercontinent, Pangaea, started breaking up, eventually forming the seven continents we see today. Heat radiating from Earth's molten iron and nickel core is released to the outermost layers of the mantle through convection, which can also be held respon... |
7 July 2008
05:58 GMT |
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They entered our lives less than four decades ago. Today most people can't imagine life without microwave ovens due to their extremely high efficiency and ability to cook and heat up food in short amounts of time. You just put food in the oven, set up a timer and at the end of the cycle all you have to do is eat... |
15 May 2008
09:04 GMT |
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There are two types of motion sensors currently commercially available, the active sensors and passive sensors. A motion sensor is classified as being active only when it emits some kind of energy into the surrounding medium to make an accurate reading, whether it is infrared light, microwave radiation or sound waves... |
7 May 2008
06:04 GMT |
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The summer is coming and our thermo-regulation system will be once again pushed to the limits. Did you know that the human body is more resistant to cold than it is to heat? The fact is that we have physiological mechanisms more effective for combating the cold than the heat. Temperature is a parameter characterizing... |
6 May 2008
09:36 GMT |
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The ordinary lard is more than familiar to most of us. However, mammals also have a different fatty tissue called brown fat, involved in generating heat. A new study made at New York Medical College and published in the journal BMC Biology has discovered why birds lack this tissue. In the end, birds are actually livi... |
24 April 2008
02:44 GMT |
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If you know how the cooling cycle of a typical refrigeration system works, then you probably already know what a Stirling machine, or a Stirling cooler, is. University of Twente has just developed a miniature Stirling cooler, roughly three times the size of a sugar cube, able to cool micro-electronics to temperatures... |
16 April 2008
08:45 GMT |
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It is well known that electronic devices work better when subjected to low temperatures. The reason is very simple. The electrical resistance of materials is in direct relation with temperature. Higher temperature means higher electrical resistance and ultimately higher power loss. With enhanced temperature, thermal ... |
1 April 2008
08:39 GMT |
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Back here on Earth, we may experience some dangerous storms from time to time; however, they are nothing compared to the storms taking place on gas giants such as Saturn or Jupiter. These storms apparently never stop and are so big that the whole Earth would fit inside of them. Saturn's storm, for example, has a... |
28 March 2008
04:10 GMT |
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I tell you, Chinese men are precious. They wont's leave you starving even when a kitchen is not nearby. "The power of mind" can have a very realistic meaning in the case of He Tieheng, a mystic Chinese who does not need to keep a cooking machine in the house. That's because the cooking machine is himself: ... |
13 March 2008
14:06 GMT |
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Temperature can have an unlimited increase but it cannot drop below -273.15o C (0 absolute). Every minute, each square cm of the Earth's surface receives about 2 calories from the Sun. The human body too produces heat, following the burning of organic chemicals. In 1620, Francis Bacon stated that movement is the... |
14 February 2008
08:41 GMT |
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Severe drought raging across the southeast regions of the United States will probably determine a temporary reduction in electric power production capabilities of most of the nuclear plants, or even shutdowns, until the water levels in the rivers that supply the lakes near the power plants rise again to their normal ... |
24 January 2008
09:49 GMT |
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In March 2007 Jupiter spawned a new gigantic atmospheric storm measuring an area of the size of two Earth continents. However, the thick Jovian atmosphere makes the observation of processes which take place inside it very difficult, disabling a good understanding of meteorological phenomenons which trigger these stor... |
24 January 2008
03:00 GMT |
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Islanders blamed them on the witchcraft, the Inca on the spirits of the ancestors. Geysers are a type of hot spring that erupt periodically, ejecting a column of hot water and steams into the air. Their emergence needs a combination of factors (water, heat and fortuitous plumbing) that exists in only a few places on ... |
9 January 2008
08:14 GMT |
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This may seem good news for people living in areas with increased seismic activity; however, it is anything but good. A new study involving the Earth past geological activity suggests that the plate tectonics could have come to a complete halt somewhere about 30 to 50 million years ago, and may do so in a distant fut... |
7 January 2008
06:40 GMT |
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Professor Mildred S. Dresselhaus from the Massachusetts Institute of Technology has brought back to life the old idea of designing materials that could be used for controlling temperatures, with extremely efficient electronic devices similar to the photovoltaic cells and electronic devices. The material works in effi... |
21 November 2007
07:17 GMT |
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The electricity bill gives you a headache every time. What if it could simply disappear? After all, the Sun offers its energy for free and we use it all the time. The solution could be the solar houses, that heat water, dry laundry and power an electric car for free, with the help of sunlight. MIT students have creat... |
18 October 2007
05:37 GMT |
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The mystery of the space Dalmatian has been solved. The mysterious dark spots on Saturn's moon Iapetus are caused by the Sun. New images delivered by the Cassini spacecraft show the stains are located mainly on the sunward-facing slopes of craters and mountains, pointing to a runaway energy splotching areas of t... |
9 October 2007
04:47 GMT |
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A research team from the German Fraunhofer Institute developed an electronic system that is capable of working with no apparent power source apart from the energy generated by the human body. This kind of power generating system could have a lot of applications in the mobile computing industry alone, where battery li... |
20 August 2007
11:34 GMT |
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Like any reptile, a snake loves the heat. But not in the case of the rattlesnake, when confronted by California ground squirrels. A team at the University of California, Davis found that these rodents warm up their tails to ward off rattlesnakes. And when facing a squirrel waving a "hot" tail over its head, northern ... |
14 August 2007
04:32 GMT |
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Two thirds of the adult body are formed by water. A 68 kg person has about 38 liters of water in the body. 23-26 % is found inside the cells, 7,5 % in the space between the cells and less than 4 liters in the blood. This volume must be constantly maintained. How? Drinking daily two liters of water: the body adsorbs i... |
25 June 2007
15:06 GMT |
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Mushrooms, the fleshy spore-bearing fruiting bodies of fungi typically produced above ground on soil or on their food sources, are good on pizza and even for getting high. Indoor, the ones growing on the walls are considered harmful and inaesthetic and make a bad impression on visitors.Not anymore. A group of young ... |
25 June 2007
05:07 GMT |
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We tend to believe that bodyweight variations are strictly linked to the changes in fatty body mass. Still, they can be also the result of acute changes in total body water. Body weight changes triggered by climate usually take the form of weight gain rather than weight loss, especially when the body acclimates to in... |
12 June 2007
15:46 GMT |
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That's exactly what a team of scientists observed in an experiment and then transformed into a practical device. The gadget can turn heat into sound and then into electricity and is very promising as an effective method of transforming waste heat into electricity, harnessing solar energy and cooling computers a... |
4 June 2007
03:38 GMT |
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Hundreds of millions of people worldwide are affected by drought, and there are places in the world where it hasn't rained for more than five hundred years. Recurring droughts in Africa have created severe ecological catastrophes, prompting massive food shortages.Two Israeli architects pursuing PhDs at the Tech... |
2 June 2007
04:39 GMT |
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It would be nice to see all the mosquitoes and nasty insects dead with the first cold wave, and maybe see them no more the next spring.But it doesn't work like that: even if we do not see them during the winter, they posses a number of specialized proteins, "heat-shock proteins", that enable them to pass through... |
31 May 2007
04:49 GMT |
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A team of researchers have created a structure made of germanium, a material with a higher refractive index than silicon that looks like an inverse woodpile structure, with excellent optical properties due to its extremely large photonic band gap.What is an inverse woodpile structure? Exactly what the name suggests,... |
22 May 2007
03:40 GMT |
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Hot sex means better sex, right?But for some, hotter could result in no reproduction at all...An overheated pea aphid won't be able to reproduce. In fact, it's not the insect, but its bacterial symbiont that fails. And all is on a single gene. "It's the first time a mutation in a symbiont has been show... |
20 April 2007
08:56 GMT |
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Fans of NASCAR Winston Cup stock car racing can now experience the revolutionary racing modes of NASCAR Heat. Pick your favorite drivers and race on you favorite tracks in Single Race or Championship Season. In Beat the Heat challenges, players can take on all-new racing scenarios that capture all the thrills, drama,... |
28 March 2007
02:58 GMT |
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Ice is odd due to the strange behavior of the water. Most compounds in nature shrink when they get cold, and so they display a smaller volume in solid state than as liquids. But regular ice takes up more space than water because water has its minimum volume at 4°C and below or over this temperature its volume expands... |
16 March 2007
03:47 GMT |
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