‏إظهار الرسائل ذات التسميات Science. إظهار كافة الرسائل
‏إظهار الرسائل ذات التسميات Science. إظهار كافة الرسائل

الأربعاء، 14 أكتوبر 2015

This Guy Builds A Thor-Like Hammer that Only He Can Pick Up





If you have watched the most recent Avengers movie, then you would be aware of a scene where all the superheroes Iron Man, War Machine, Hawkeye, and Captain America take turns to lift Thor’s hammer but fail.



Someone has an explanation, Why?



Inspired by Thor's legendary hammer Mjolnir that is not liftable by anyone except Thor, an electrical engineer has built a real-life Mjolnir that

الخميس، 23 يوليو 2015

Earth Heading For ‘Mini Ice Age’ Within 15 Years

Ice_age
Prediction – Earth to Face a New `Mini Ice Age’

Scientist predict that the Earth would face a new `mini ice age’ in the next 15 years which would cause severe cold winters during which rivers like the Thames may tend to freeze. As Antarctic Vortex grips Australia, solar researchers from the University of Northumbria in UK state that solar activity is set to drop by 60 percent by 2030.

Professor Valentina Zharkova, research head, informed that the fluid movements in the Sun, which is believed to create 11 year cycles in the weather would cancel each other out causing a dramatic temperature drop which would lead to a weather phenomenon known as a `mini ice age which had earlier hit between 1645 and 1715. The discoveries are established on new model that the scientist believes produces `unprecedentedly accurate prediction of irregularities’, within the Sun’s 11-year heartbeat.

According to Professor Zharkova, he states that between the cycle 2030 and around 2040, two waves will mirror each other exactly, peaking at the same time though in opposite hemispheres of the sun. Their interaction would be disruptive or they will nearly cancel each other and predicts that this would lead to the properties of a `Maunder Minimum’.

Maunder Minimum – Europe/North America Experienced Cold Winters (1645-1715)

Maunder Minimum was the name that was given when Europe and North America had experienced very cold winters, during the period between 1645 and 1715 and during that time the Thames River in England was said to be frozen over. Research findings were presented at the National Astronomy Meeting in Llandudno, Wales and also published in the papers of the Royal Astronomical Society.

This surprising news has been given as the Antarctic Vortex whirled into eastern Australia bringing about a freak phenomenon known as thunder-snow. The tropical style thunderstorms, accompanied by heavy snowfalls thundered through the Blue Mountains, west of Sydney and town as far as Orange recently. Several areas of the country are expecting destructive winds, which could reach blizzard intensity of 90km/h while the snow tends to continue to fall and the big freeze begins to bite.

Snow that falls as the big freeze tend to start to affect the nation’s south east where sub-zero temperature are predicted in some places for much of the coming week. According to the Bureau Meteorology, in the coming days, it is said that strong cold front with low to the south would be moving through the state, bringing in cold vigorous, westerly winds.

Sun’s Activity Differs – Cycle of 10 to 12 Years

Scientists had first discovered that the sun’s activity differs over a cycle of 10 to 12 years in 1843. Variations within that cycle became difficult to predict though several solar physicists were aware that the fluctuation were due to a dynamo of moving fluid deep within the sun. Professor Zharkova’s team found that adding a second dynamo near the surface of the sun created a far more accurate model.

They found magnetic waves in two various layers of the sun’s interior that varied between the northern and the southern hemispheres of the sun.According to Professor Zharkova, on combining both waves together and comparing the real data for the current solar cycle, they observed that the predictions showed an accuracy of 97 percent. The magnetic wave patterns indicated that there would be few sunspots in the next two solar cycles. Cycle 25 that peaks in 2022 and Cycle 26, between 2030 and 2040 will be having both a significant reduction in solar activity.

الأربعاء، 8 يوليو 2015

Neutrinos Found To Switch To Elusive ‘Tau’ Flavour


Lab
First Direct Proof of Metamorphosis

Physicist have found the first direct proof of a metamorphosis between two of the known forms of neutrinos by utilising a beam shot through the Earth’s crust, which are known as `muon’ and `tau’ of basic particles.Oscillation Project with Emulsion tracking Apparatus – OPERA conducted an experiment, at the Gran Sasso underground lab in central Italy made headlines in the year 2011 after its announcement that it had identified neutrinos travelling faster than light, against Einstein’s special theory of relativity.

 However, the claim was later proved false when the researcher found various probable sources of error in the measurements. The OPERA association declared on June 15 that it had now achieved the original goal of observing the switch in neutrino flavours. According to a neutrino physicist at the University of Genoa, Marco Pallavicini, who is not a member of the OPERA collaboration, states that `it was an extremely difficult measurement that no one had done before.Three known forms of flavours, neutrino, electron, muon and tau and the particles name refer to the fact that on unusual occasion when neutrino tend to interact with protons or neutrons, they create electrons, muons or tau leptons.

T2K – First Direct Evidence of Appearance of Different Flavour

Scientists have been suspecting that neutrinos could transform from one flavour to another and various previous experiments conducted which had used known sources of certain type of neutrino have detected fewer neutrinos than what could be expected if particles had not changed flavour. The T2K experiment carried out in July 2013 envisaged the first direct evidence of the appearance of a different flavour rather than the disappearance of the original one and discovered electron neutrinos in a beam which was originally made of muon neutrinos. In the span of 2008 and 2012, a beam of muon neutrinos was shot from Europe’s particle physics lab – CERN, near Geneva, Switzerland, to the base of the Gran Sasso massif some 730 km towards the southeast where the Italian lab is carved in the rock. Some of the muon neutrinos had changed into tan neutrinos by the time the neutrinos had arrived at Gran Sasso and when these hit the lead targets in the OPERA detector, they created tau lepton according to the latest result.

Discovered 5th Tau Lepton – Experiment 

Giovanni De Lellis, a physicist at the University of Naples, also an OPERA spokesperson informed that the leptons tend to decay in just one-trillionth of a second. Although it tends to travel at almost the same speed of light, the tau lepton only runs for less than a millimetre. The short lived particles with an array of 150,000 bricks, each of which weighs around 8 kg containing 57 stacked emulsion plates, was detected by OPERA.

With the set-up having 110,000 square metres of surface area, researchers have set up an automated system in order to search the plates for microscopic streaks which could signal the fleeting presence of tau leptons. In the incomplete result which was announced last year, OPERA collaboration calculated four probable tau lepton findings not adequate in claiming a success as per the severe detection criteria of particle physics. However, the physicists have now discovered a fifth tau lepton adequate for the experiment to be considered as successful.

الثلاثاء، 30 يونيو 2015

Scientists have Increased Fiber Optic capacity Nearly 20 Times





There’s a lot of speculations and fears regarding the fiber optic network that delivers the Internet to your home and offices — What will happen when the fiber optic cables max out?



Well, there is nothing to fear about it. Your Internet is Safe!



Scientists at the University of California, San Diego, have recently managed to break the "capacity limits" of fiber optic networks, opening