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These Videos of Paris in Motion are Mesmerizing

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In 2012, web developer and photographer Mayeul Akpovi launched Paris in Motion, a series of stop-motion hyperlapse videos that take the viewer on a beautiful tour of the city's famous sights, from the Eiffel Tower to L'Arc de Triomphe. Watch his latest video—the fourth—below:

Paris in Motion (Part 4) from Mayeul Akpovi on Vimeo.

According to Akpovi's website, "Paris in Motion is a series of stop-motion time-lapse (hyperlapse) videos about the city of Paris (France). Filmed frame by frame with manual camera movements, composed of more than 30,000 photographs, it allows you to visit some of the most beautiful monuments and human activities of the French capital in a few minutes."

To create the videos, Akpovi uses a Canon 5D Mark II camera with various lenses and filters, which he mounts on a tripod. He then walks as he shoots, taking the tripod with him. Later, he stablizes the images in Adobe After Effects and splices them together into hypnotic videos. (You can see a making of video here.)

Check out the rest of the videos in the Paris in Motion series below.

Part One:

Paris in Motion (Part 1) from Mayeul Akpovi on Vimeo.

Part Two:

Paris in Motion (Part 2) from Mayeul Akpovi on Vimeo.

Part Three:

Paris in Motion (Part 3) from Mayeul Akpovi on Vimeo.

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History
The Queen of Code: Remembering Grace Hopper
By Lynn Gilbert, CC BY-SA 4.0, Wikimedia Commons

Grace Hopper was a computing pioneer. She coined the term "computer bug" after finding a moth stuck inside Harvard's Mark II computer in 1947 (which in turn led to the term "debug," meaning solving problems in computer code). She did the foundational work that led to the COBOL programming language, used in mission-critical computing systems for decades (including today). She worked in World War II using very early computers to help end the war. When she retired from the U.S. Navy at age 79, she was the oldest active-duty commissioned officer in the service. Hopper, who was born on this day in 1906, is a hero of computing and a brilliant role model, but not many people know her story.

In this short documentary from FiveThirtyEight, directed by Gillian Jacobs, we learned about Grace Hopper from several biographers, archival photographs, and footage of her speaking in her later years. If you've never heard of Grace Hopper, or you're even vaguely interested in the history of computing or women in computing, this is a must-watch:

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science
Why Are Glaciers Blue?
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iStock

The bright azure blue sported by many glaciers is one of nature's most stunning hues. But how does it happen, when the snow we see is usually white? As Joe Hanson of It's Okay to Be Smart explains in the video below, the snow and ice we see mostly looks white, cloudy, or clear because all of the visible light striking its surface is reflected back to us. But glaciers have a totally different structure—their many layers of tightly compressed snow means light has to travel much further, and is scattered many times throughout the depths. As the light bounces around, the light at the red and yellow end of the spectrum gets absorbed thanks to the vibrations of the water molecules inside the ice, leaving only blue and green light behind. For the details of exactly why that happens, check out Hanson's trip to Alaska's beautiful (and endangered) Mendenhall Glacier below.

[h/t The Kid Should See This]

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