Shahram Gharravi

156 Flips | 5 Magazines | 301 Likes | 11 Following | 7 Followers | @ShahramGharravi | 40 year old Iranian. Bs of industrial engineering from IUST. I am married and have a 5 year old daughter. I live in Perth.

Why Cosmology's Expanding Universe Controversy Is An Even Bigger Problem Than You Realize

Look out at a distant galaxy, and you’ll see it as it was in the distant past. But light arriving after, say, a billion-year journey won’t come from a galaxy that’s a billion light years away, but one that’s even more distant than that. Why’s that? Because the fabric of our Universe itself is …

Who was here first? A new study explains the origins of ancient Indians

A new paper authored by 92 scientists from around the globe that was posted online this weekend could settle some major questions about the subcontinent’s history and what that means for various theories of Indian civilisation. The paper, titled “The Genomic Formation of South and Central Asia,” …

How deepfake porn is killing our trust in tech

Months after fake "celebrity porn" reared its head online, there's a bad-tech aftertaste. Clearly our sense of truth is morphing, with clever dickies …

The Consciousness Deniers

What is the silliest claim ever made? The competition is fierce, but I think the answer is easy. Some people have denied the existence of …

Consciousness

Does autism arise because the brain is continually surprised?

<b>Originally published on Spectrum</b><p>Satsuki Ayaya remembers finding it hard to play with other children when she was young, as if a screen separated her …

Watch 13.8 Billion Years Of Space History In 10 Minutes

Consider the <i>entire history</i> of the universe. Humans? We're nothing. A speck. A dot. A crumb in a sea of cosmic biscuits. That sort of thing. So when …

Jennifer Lawrence admits she avoids sex because ‘d**k is dangerous’

Jennifer Lawrence has admitted that she is ‘all bark and no bite’ when it comes to sex, and that she is looking for romance in order to enjoy the act.<p>…

Scientists have identified 4 types of humor — here's how to find out which one you are

Humor varies greatly from person to person, and what one person finds funny won't necessarily appeal to someone else.<p>Psychologist Rod Martin took a stab at quantifying humor, and in 2003 he identified what he called the four broad styles of humor:<p>Martin broke down each style in the Journal of …

Jokes

Artificial Intelligence Experts Respond to Elon Musk's Dire Warning for U.S. Governors

If you hadn't heard, Elon Musk is worried about the machines. Though that may seem a quixotic stance for the head of multiple tech companies to take, …

Artificial Intelligence

Why Earth might have had two suns at one point

There is new evidence to support the hypothesis that all stars are "born" with at least one "sibling" — including our sun.<p><b>Why it matters:</b> "Our work …

Ask Ethan: Can The Universe Ever Expand Faster Than The Speed Of Light?

It’s the most fundamental law of special relativity, and the realization that led Einstein to some of the greatest physics breakthroughs of all time: the idea that nothing can travel faster than light. That holds true even today, as all massless particles in a vacuum move exactly at the speed of …

A brain tumor gave me a persistent sense of déjà vu—and changed the way I think about memory

One drab afternoon a few years ago, something very unusual happened to me. I was lounging under a tree in a packed east London park when I experienced a sudden feeling of vertigo, followed immediately by an overwhelming and intense sense of familiarity.<p>The people around me vanished and I found …

Neurophilosophy

What Things Should Every Physics Major Know?

Over the weekend, cosmologist and author Sean Carroll tweeted about what physics majors should know, namely that “the Standard Model is an SU(3)xSU(2)xU(1) gauge theory, and know informally what that means.” My immediate reaction to this was pretty much in line with Brian Skinner’s, namely that …

Physics

Blue-Collar Revenge: The Rise Of AI Will Create A New Professional Class

New, more-modern manufacturing processes, including the use of robots, have gutted the number of high-paying factory jobs in the U.S. and caused economic angst in large portions of the country. The movement of manufacturing plants overseas has compounded the problem and fueled the working class’s …

Brain scans highlight a hidden, "higher" state of consciousness

Reaching a higher state of consciousness is a concept you're more likely to hear a spiritualist spout than a scientist, but now neuroscientists at …

Remembering the first 'photo' of a black hole

Black holes are so outlandish that the scientists who first thought them up figured they couldn't possibly exist in reality. They form from massive, collapsed stars and are so dense that nothing can escape their gravitational pull, including light. Black holes mess with spacetime so badly that …

Earth - How the Universe can expand if there is no extra space

The Universe can expand without there being anything outside it for it to expand into, says science writer and astrophysicist Adam Becker. He explains this mind-bending idea to BBC Earth's Michael Marshall and Melissa Hogenboom, with help from the animators at <b>Pomona Pictures</b>.<p><i>Join over six million</i> …

How Conservatives Can Save America

If properly understood and marshaled, they “can be a liberal democracy's strongest bulwark against the dangers posed by intolerant social movements.”<p>Conservatives can save America in 2017.<p>That’s my takeaway from a passage that I haven’t stopped thinking about since Donald Trump’s election. It …

Political Science

Quantum Mechanics (A Ladybird Expert Book) by Jim Al-Khalili

<b>Part of the new Ladybird Expert series, Quantum Mechanics is a clear, simple and entertaining introduction to the weird, mind-bending world of the</b> …

The Trouble with Quantum Mechanics

The development of quantum mechanics in the first decades of the twentieth century came as a shock to many physicists. Today, despite the great …

Quantum Mechanics

The largest photo of the known universe weighs two million gigabytes

I guess this can be described as the universe’s biggest selfie…<p>Over 4 years the Pan-STARRS1 (The Panoramic Survey Telescope and Rapid Response …

Brain activity is too complicated for humans to decipher. Machines can decode it for us.

Why we need artificial intelligence to study our natural intelligence.<p>Over the past several years, Jack Gallant’s neuroscience lab has produced a string of papers that sound absurd.<p>In 2011, the lab showed it was possible to recreate movie clips just from observing the brain activity of people …

Machine Learning

Why don't we teach Einstein's theories in school?

The discovery of gravitational waves, announced earlier this year, marked the ultimate test of Einstein’s general theory of relativity. Einstein …

This Simple Philosophical Puzzle Shows How Difficult It Is to Know Something - Facts So Romantic

In the 1960s, the American philosopher Edmund Gettier devised a thought experiment that has become known as a “Gettier case.” It shows that …

University of Toronto

Physicists Think These Could Be the Weirdest Objects in the Universe

"Strange stars" could theoretically exist forever, though we've never spotted one.<p>When an incredibly massive star supernovas, it leaves behind one of two things: a neutron star or a black hole. Neutron stars are the leftover cores of massive stars after they have ejected all their other material. …

This New Hypothesis Claims to Solve 5 of The Biggest Problems in Physics

Welcome to 'New Physics'.<p>Physicists have come up with a new model that they say solves five of the biggest unanswered questions in modern physics, …

Matter Is No More Than Fluctuations In Vacuum

Scientists had been striving to explore what lies between planets, stars and galaxies and what medium electromagnetic waves propagate through. James …

Physics

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Science Says There Are 4 Basic Types of People. Which One Are You?

According to a recent study, 90 percent of us are either optimistic, pessimistic, trusting, or envious. Guess which group was the biggest.<p>How trustworthy are people? How far do we trust one another?<p>That's what researchers set out to discover. In a recently published study, scientists from a number …

What is Einstein's theory of relativity?

Albert Einstein’s theories of special and general relativity rule the field of classical physics.<p>Their effects can be seen in our everyday lives and …