WHY DOES THE MOON APPEARS TO CHANGE SHAPE

WHY DOES THE MOON APPEARS TO CHANGE SHAPE?

                           Each month it seems as though the moon changes shape. Of course, that is not really the case. Only the part of moon that is both turned towards the Earth and lit by sun is visible from Earth. The moon orbits the Earth once every 27.3 days, a lunar month. As the moon also takse exactly 27.3 days to turn on its axis, the same side of the moon is always turned toward the earth. The amount of moon that can be seen changes as the moon position changes.

           It is this change in the amount of the moons face which can be seen from the earth, that makes the moon look as though it is changing shape. Our word month comes from moon although our calender months are no longer linked to the phases to moon.

FACT FILE

         In 1931 Johannes Winkler launched his HW-1 rocket. It went 1.9 metres ( 2 yards ) into the air, turned over and fell back to the ground.

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LARGEST TELESCOPE IN THE WORLD

WHICH IS THE LARGEST TELESCOPE IN THE WORLD?

   

     

       Two identical telescopes called Keck i and Keck ii are the largest telescopes in the world. each has a segmented mirror 10 M ( 33 feet )in diameter. the telescopes are on Mauna Kea , a mountain in Hawaii.

      The telescope in an optical observatory which stands under a large dome with shutters. the dome and shutters protects the telescope from weather. motors and precision gears keep the telescope pointed in the desired direction as the Earth rotataes.

         Observatories use two principal kinds of optical telescope - reflecting telescope and refracting telescopes. reflecting telescopes use a curved mirror or a set of such mirrors to focus light, and refracting telescope use a system of lenses.

    FACT FILE

      Pluto takes 248 years to orbit around sun !!!! amazingly, this means that not even half a years has elasped on the planet since its discovery in 1930. another strange feature about pluto is that it rotates in the opposite direction from most 

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Fastest Train Of the World

Worlds Most Fastest Train 

World's fastest magnetic-levitation train of Japan that will complement the Shrinkage bullet-train network when ready in 2027.

Central Japan Railway plans to begin work on the 5.1 trillion yen ($51 billion) mangle line between Tokyo and Nagoya as early as April. Trial runs resumed on Thursday after the company spent five years building a 24-kilometer extension of a test track. The trains can run at speeds of up to 500 kilometers per hour.

The mangles will whisk passengers to Nagoya, a city of 2.3 million people, from Tokyo in as little as 40 minutes for the 286-kilometer journey, from as short as 95 minutes now, according to JR Central. Faced with the challenge of tunneling under Tokyo's skyscrapers and Japanese Alps, the project is unlikely to be completed on time even as Japan's population is projected to shrink.

"I think it's going to be finished very, very late," said Edwin Meaner, president of Atlantis Investment Research in Tokyo, which manages about $3 billion in assets. "If the population projections are correct, then the use of the bullet train will go down."

Japan's population may fall to as little as 117 million by 2027 from 127 million now, according to projections by the National Institute of Population and Social Security Research. By 2060, the overall population may drop to 80 million.

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Molecular Transistors

Molecular Transistors
will make breakthrough in electronics


Nobody can doubt the effort of scientists when it comes to transistors and their importance in modern technological advancements. Over time, transistors have been in the market, designed from singular molecules. 

Electron flow in these transistors has been facilitated by the modulation of energy produced by molecular orbits or orbital. This behavior has greatly influenced the genesis of current and future molecular transistors and other devices. 

Since transistors (integration of circuit elements) work with the electric current flowing within the electrodes (drain and source electrodes), trying to improve voltage put to the 3rd electrode, normally referred to as gate electrode, the manufacture of these transistors takes time, money and energy.

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Wearable Electronics

Wearable Electronics-
Now and Future?



A flexible, skin-like device can acquire electrical signals from the brain and skeletal muscles and potentially transmit the data it collects wire less ly.

It’s a doctor’s dream to be able to monitor patients as they go about their daily lives. That dream could someday become reality, thanks to a breakthrough in wearable electronics. 


A research team led by University of Illinois materials science engineering professor John Rogers; University of California, San Diego, bioengineering professor Todd Coleman; and Northwestern University mechanical engineering professor Yonggang Huang has developed a thin, flexible device mounted with tiny electronic components.


It can acquire electrical signals from the brain and skeletal muscles and potentially transmit the data it collects wirelessly. Best of all, it doesn’t impede the wearer’s ability to function normally.

While traditional medical monitoring methods, such as electroencephalography (EEG) and electrocardiography (EMG), require patients to be tethered to bulky equipment, this device is applied like a temporary tattoo.

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Technologies About Full Body Scanners

Full Body Scanners, 
How do Scanners work?

There is a technology for full body security scanners might become a best alternative to body searches with the increased alleged terror threats over the globe.

The full body scanning system has taken the world in the past recent time. 

It is the most popular and advanced system of the Full body imaging technology that involves scanning of the whole-body through clothing revealing both metallic and non-metallic hidden objects, including weapons or plastic explosives.

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