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Scientists have made the fourth detection of gravitational waves – ripples in the fabric of space and time – formed by the collision of two massive black holes located about 1.“It is wonderful to see a first gravitational-wave signal in our brand new Advanced Virgo detector only two weeks after it officially started taking data,” said Jo van den Brand from Vrije Universiteit (VU) Amsterdam in the Netherlands, spokesperson of the Virgo collaboration.It is the first joint detection of gravitational waves with the Virgo and LIGO collaborations. The signal was recorded on August 14 by the Virgo detector located in Italy, and the two Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors located in the US. Findings from the event, known as GW170814, will be published in the journal Physical Review Letters.The Virgo detector joined the LIGO detectors on August 1 this year.

The detected gravitational waves – ripples in space and time – were emitted during the final moments of the merger of two black holes with masses about 31 and 25 times the mass of the Sun and located about 1.8 billion light-years away. With the end of observations with the initial Virgo detector in October 2011, the integration of the Advanced Virgo detector began.end-ofTags: gravity, ligo, space.Advanced LIGO is a second-generation gravitational-wave detector consisting of the two identical interferometers in Louisiana and Washington, and uses precision laser interferometry to detect gravitational waves.The newly produced spinning black hole has about 53 times the mass of our sun, which means that about 3 solar masses were converted into gravitational-wave energy during the merger.It is the first joint detection of gravitational waves with the Virgo and LIGO collaborations.

Also known as collective or group hysteria, it occurs when a large number of people, thanks to fear or rumours, experience a collective illusion. Instead, they would rather believe a rumour instead of being rational. After a subsequent blackout, she woke up to realise her hair had been cut.. It’s contributing to this phenomeno,” she says.She lists the 2001 Monkeyman incident as something that was born out of this group hysteria.(Representational image)Imagine waking up one fine morning to a chunk of your hair, ruthlessly chopped off, and lying on Composite Material the floor. “This case isn’t about the mentally disturbed. “In our society, fear is very much a part of our social fabric.”Consultant psychiatrist Dr Hozefa Bhinderawala adds that more than superstition, such cases can be blamed on to people with malicious intent.In the latter incident, residents of Delhi had complained of a monkey-like man, who allegedly terrorised, bit and scratched people before eventually disappearing.

“We all have a way of identifying what other people are going through and believe what they believe,” offers Priyanka Mahajan, psychiatrist at Masina Hospital, as an explanation. After a spate of such instances in the Northern part of the country, Mumbai has seen three different braid-chopping cases now. “When you take part in unnatural or frenzied actions due to a press from your subconscious, it’s called hysteria.”Counselling psychologist Kinjal Pandya explains that in a country like India, when it comes to creating this mass hysteria, fear is the main ingredient. The rumours ended up being so close to the truth, that two men in the capital even died as they tried to escape the creature. She says, “Most times, these women are in a state of dissociation. As many as 90 such bizarre cases have been reported across the country since June. When it spreads like it has now, we call it mass hysteria.. What these women are doing is chopping off their own hair — consciously or subconsciously unaware of it — perhaps in their sleep.