General Awareness

SCIENCE & TECHNOLOGY - September 2018

Sep 2018

May 01, 2019

Record Solar Hydrogen Production

Researchers have created a smart device capable of producing large amounts of clean hydrogen.
By concentrating sunlight, their device uses a smaller amount of the rare, costly materials that are required to produce hydrogen, yet it still maintains a high solar-to-fuel efficiency.
Their research has been taken to the next scale with a pilot facility installed on the EPFL campus.
The scientists estimate that their system can run for over 30,000 hours, or nearly four years, without any part replacements, and up to 20 years if some parts are replaced every four years.
Their solar concentrator turns and follows the sun across the sky in order to maximise its yield.
As per Sophia Haussener, the head of the LRESE and the project lead, in sunny weather, the system can generate up to 1 kilogram of hydrogen per day, which is enough fuel for a hydrogen-powered car to travel 100 to 150 kilometers.

Wynk Tube Music App

Bharti Airtel launched a music application Wynk Tube – an extension of its existing Wynk Music app.
Wynk Tube will allows users to stream audio and video of popular tracks within the same interface.
Users can also instantly switch between audio and video mode of their favourite tracks, with a single touch.
The service will be free for Airtel subscribers. Non-Airtel users will need to pay Rs. 99 a month, post a trial offer of 30-day free usage.

Apr 20, 2019

Bone Lost in Evolution Likely to Come Back

A primordial bone found in our primate ancestors but thought to be redundant and rapidly dwindling in humans — appears to have made a quiet comeback over the past century.
Scientists from Imperial College London have admitted they are stumped as to why the fabella, a small bone buried in a tendon behind the knee, is now three times more common than it was in the early 1900s.
They speculate that its reemergence could be linked to joint problems, and understanding why could help treat or protect those most at risk.
Fabellae are sesamoid bones, which means they grow in the tendon of a muscle — the knee cap being the largest example in the human body.

Apr 19, 2019

Universe's Most Ancient Molecule Detected

Scientists have detected the most ancient type of molecule in our universe in space for the first time ever.
Helium hydride ion (HeH+) was the first molecule that formed when, almost 14 billion years ago, falling temperatures in the young universe allowed recombination of the light elements produced in the Big Bang.

Nepal Launches its First Satellite

Nepal successfully launched its first satellite into space from the US to gather detailed geographical information of the Himalayan nation.
Developed by the Nepalese scientists, NepaliSat-1 satellite was launched from Virginia in United States.
Two Nepali scientists, Aabhas Maskey and Hariram Shrestha who are currently studying at Japanese Kyushu Institute of Technology, developed the satellite under the BIRDS project of their institute.

Apr 17, 2019

Earth-sized Planet Discovered

NASA's latest planet-hunting probe has discovered its first Earth-sized exoplanet orbiting a star 53 light-years away.
The Transiting Exoplanets Survey Satellite (TESS) also discovered a warm sub-Neptune-sized world in the same system.

Google Blocks Chinese App TikTok in India

Google blocked access to the hugely popular video app TikTok in India to comply with a state court's directive to prohibit its downloads.
The move comes hours after a court in southern Tamil Nadu state refused a request by China's Bytedance Technology to suspend a ban on its TikTok app, putting its future in one of its key markets in doubt.

Apr 15, 2019

World's Largest Plane

The world's largest aeroplane, with two fuselages and six Boeing 747 engines, made its first test flight in California.
The mega jet, called Stratolaunch, carried out its maiden voyage over the Mojave Desert.
It is designed to carry into space, and drop, a rocket that would in turn ignite to deploy satellites.
It is supposed to provide a more flexible way to deploy satellites than vertical takeoff rockets because this way all that is needed is a long runway for takeoff.
The aircraft is so big that its wing span is longer than a football field, or about 1.5 times that of an Airbus A380.
Specifically, the wing span is 117 metres while it is just under 80 metres for an Airbus A380.
The plane flew for about two-and-a-half hours.
It hit a top speed of 304 km per hour and reached an altitude of 17,000 feet (5,182 metres).

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