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VideoSift Clips of the Week

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Great Video Explaining How A Vehicle's Differential Works

It's an old documentary- and it explains how it works so well with models and simple examples. I'm left feeling that how-to videos were somehow better before the advent of CGI.

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Ultra High Speed Robot Reflexes

There's really something kind of spooky about watching a robot doing something that a human would do, like bounce a ball, only 100 times faster. Brace yourself for the singularity.

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Colliding smoke rings produce multiple mini-vortices

Only 11 seconds long- still shows some very neat vortices.

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Extreme Vortex Cannon

And while we are on the topic of vortices, check out the Extreme Vortex Canon. Do you think it's possible to knock over a brick "house" with a vapor ring? Find out.

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Shooting Clay Pigeons... with a Bow

Here's a neat video of a guy who shoots traps with a bow and arrow- deadly accurate and a lot less noise than a gun. If you like accurate shooting, then you should also check out the incredible "Sling Shot Man"

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Lastly, just a quick note to tell you that VideoSift has upgraded to a brand new version of our software and we've got a new logo! If you'd like to check out all of the new features in VideoSift 4.0, drop in here. Thanks!

Comments (15)

Newest 5
Newest 5 Comments

Ah, the differential. The concept can be really hard to understand if you can't see it in action, even if you have the sort of visual mind that car people have. Modern differentails are essentially the same, even in front-wheel-drive vehicles. Though many now have a small modification to the design that locks the two wheels together if the difference in speed is too great, making it easier to get around in the snow. And easier to do drifts. Another useful application for the differential is combining inputs, let's say you hook what was one of the outputs to an electic motor and what was the original input to a handcrank, the original second output (which is now the only output) will spin at the combined speed of both the new inputs. I love gears and cogs.
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I always figured that's where they got the idea? Anyway, what about those little round things in tide pools? I always enjoyed poking them and watching them scrunch up. And those are hardly the only organisms which exhibit such behavior.
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I'm pretty sure the idea came from the polychaetes, a class of annelid worms. Yes, they're animals and worms.

As whiterabbit said, I think it's based on "Christmas tree worms" (Spirobranchus giganteus). Here a video: http://www.youtube.com/watch?v=bVJcBRqzr8Y
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There are also tube worms that do the same thing in coral reefs. But as almost every one else has said, corals aren't plants.

Cola: tide pools where? There are lots of different critters in different tide pools all over the world.
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Pandora envy sweeeps the nation! That is really cool though, makes you think the creators of the film had based the plants on this exact species.
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Zava, tide pools in Oregon. I'm pretty sure these critters are common in this climate. I can't seem to find the species, though. It's some kind of anemone. It looks like a little green mouth with fuzzy lips and it scrunches up and closes when you touch it into a little brown lump.
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Everything on Pandora was based (in most parts) on stuff you find on Earth. I don't know why people are so surprised to find similar stuff here...
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