How Do Retroreflectors Give You Super Vision at Night?

How Do Retroreflectors Give You Super Vision at Night?

When a beam of light hits a super-shiny object like a mirror, it reflects off it in a very particular way.Photograph: Rhett AllainFor both of them, their light hits the mirror at the same angle that their light also reflects from the mirror—but in the opposite direction.

They Claimed the Covid Vaccine Made Them Sick—and Went Viral

They Claimed the Covid Vaccine Made Them Sick—and Went Viral

This story originally appeared on WIRED UK.The videos all made the same claims: both Skelton and Desselle had been vaccinated for Covid-19 shortly before developing their tremors, and the vaccine, they alleged, was to blame.

A Deep Dive With the Weirdest Fishes in the Sea

A Deep Dive With the Weirdest Fishes in the Sea

But the Twilight Zone specimens that Rocha and his colleagues bring back to the California Academy of Sciences in San Francisco, including unique corals and fishes, are helping them piece together a snapshot of one of the weirdest habitats on Earth.

The Hidden Gems of Apple Arcade

The Hidden Gems of Apple Arcade

Best of all, Tangle Tower is adapted perfectly to play on a phone, with simple controls allowing for easy navigation, inventory management, and puzzle solving.Over the Alps provides that kind of spy experience, set against a backdrop of World War II intrigue and told engagingly though postcards sent to your confidant.

Physicists Are Bewitched by Twisted Graphene's 'Magic Angle'

Physicists Are Bewitched by Twisted Graphene's 'Magic Angle'

Jarillo-Herrero has never been a slacker, but his activity has jumped several levels since his dramatic announcement in March 2018 that his lab at MIT had found superconductivity in twisted bilayer graphene—a one-atom-thick sheet of carbon crystal dropped on another one, and then rotated to leave the two layers slightly askew.

Physics Owes a Lot to a Little-Loved Math Class

Physics Owes a Lot to a Little-Loved Math Class

I will use all of the triangles in the drawing above and measure both x and y (although x doesn't change) and then plot the ratio of y/x versus the angle theta.

Here's How Fast That Jumping Tesla Was Traveling

Here's How Fast That Jumping Tesla Was Traveling

Boom.Now for some questions.How fast was the car traveling?Normally when I need to find the velocity of an object in a video, I just use my typical video analysis techniques in which I mark the position of the object in each frame.