Listen for one minute and you'll hear what I mean. Via my old friends at Neatorama.
Showing posts with label Video - science and nature. Show all posts
Showing posts with label Video - science and nature. Show all posts
18 October 2019
17 October 2019
Water gushing from a tree
Congratulations to the people of Montenegro for not creating a "legend" to explain the phenomenon.
"There is no legend. We are not people who are inclined to invent something. This is purely a natural thing."Our world would be a better place if more people accepted and understood basic scientific principles.
09 October 2019
18 September 2019
Dropping feathers and a bowling ball in a vacuum
Educated people know what's going to happen, but it's still interesting to see in real life. If you're in a hurry, you can start at about the 2:20 mark.
30 August 2019
11 August 2019
How fast can YOU run in deep snow?
Those long legs give the moose access to underwater vegetation in a lake, but also truly remarkable speed going through deep snow.
If you're short of time, the action really begins at about the 1:30 mark.
10 July 2019
06 July 2019
13 May 2019
Why planets go "retrograde"
Via Neatorama.
Reposted from 2016 to add this convenient diagram:
Planetary orbits as viewed from the earth look like patterns drawn with a Spirograph. Image via.
See also this very interesting mathematical analysis: The Pentagram of Venus (with a hat tip to an anonymous reader).
22 April 2019
Imagine how deep the water is at this dock
Filmed in Alaska. Worth clicking the fullscreen icon at lower right.
09 April 2019
Arctic now in an "unprecedented state"
A new research paper by American and European climate scientists focused on Arctic warming published Monday reveals that the "smoking gun" when it comes to changes in the world's northern polar region is rapidly warming air temperatures that are having—and will continue to have—massive and negative impacts across the globe.
The new paper—titled "Key Indicators of Arctic Climate Change: 1971–2017"—is the work of scientists at the International Arctic Research Center at the University of Alaska Fairbanks and the Geological Survey of Denmark and Greenland in Copenhagen (GUES).
"The Arctic system is trending away from its 20th century state and into an unprecedented state, with implications not only within but beyond the Arctic," said Jason Box of the GUES, lead author of the study. "Because the Arctic atmosphere is warming faster than the rest of the world, weather patterns across Europe, North America, and Asia are becoming more persistent, leading to extreme weather conditions. Another example is the disruption of the ocean circulation that can further destabilize climate: for example, cooling across northwestern Europe and strengthening of storms."
07 March 2019
21 February 2019
08 February 2019
The best video I've seen in years
Six minutes in length and worth every millisecond, IMHO. As you watch the cells divide, you realize that each one is programmed to a different final outcome, and even when they divide those two divisions likely have different fates. And if one or two cells screw up at a given moment, the result is a spina bifida or whatever. It's as fascinating as contemplating deep space or deep time.
31 January 2019
River horse makes an appearance
If you don't want to "wait for it," just click the progress bar to start at the 2 minute mark. I was surprised by this happening so far from shore. Must be a shallow river.
22 January 2019
Gleanings from "Cosmos - A Personal Voyage"
I was entranced about 40 years ago when PBS first broadcast Carl Sagan's Cosmos: A Personal Voyage, so this year I decided to give it one final watch. I particularly wanted to revisit his comparison of the stars to grains of sands on earth's beaches. Here are some notes I jotted down while watching all 13 episodes:
Mankind has existed for 40,000 generations. Humans have always viewed the stars as a metaphor for life after death, rebirth, reincarnation because of the cyclicality of the cosmos - a new moon is followed by a crescent moon, the sun rises every day, the constellations rise and fall.It seems appropriate to close with Vangelis' "Heaven and Hell" - the theme song for Cosmos.
There are a hundred billion galaxies containing a billion trillion stars in the observable universe. Those galaxies are typically 300,000 light-years apart.
A handful of beach sand contains about 10,000 individual grains, which is more than the number of stars we can see on a clear night. But the number of stars in the universe is greater than the number of grains of sand on all the beaches of the entire world. [episode 8]
The distance from earth to the center of the Milky Way is about 30,000 light-years.
The distance to the nearest other spiral galaxy is 2 million light-years.
The distance to the ost distant quasar is 8 billion light-years.
The distant galaxies are receding at a speed of 200 million kilometers per hour.
If you postulate that God created the universe, you have to ask where God came from. If this is unanswerable, then just save a step and say the same of the universe. Ditto for the reply that God always existed. Then delete God and say the same for the universe.
"It is the birthright of every child to encounter the cosmos anew in every culture in every age. When this happens to us, we experience a deep sense of wonder. The most fortunate among us are guided by teachers who channel this exhilaration. We are born to delight in the world..."
We humans have set foot on another world in a place called the Sea of Tranquility, an astonishing achievement for creatures such as we, whose earliest footsteps three and one-half million years old are preserved in the volcanic ash of east Africa. We have walked far. These are some of the things that hydrogen atoms do given fifteen billion years of cosmic evolution."
06 January 2019
Fish skins used to treat burn wounds
Veterinarians at UC Davis are using fish skin to treat wild bears burned in that state's recent wildfires. This is not a graft, but rather a biologic bandage. Tilapia skin has also been applied to the paws of a young mountain lion.
“You want to do everything possible to get these animals feeling better. It’s not their fault they were in this horrible fire and they’re in a strange environment and they don’t know what’s going on and they hurt.”More details and photos.
Giving them a long time to recover wasn’t an option. The team didn’t want to risk having the bears acclimate to people or captivity. Standard care, which would require frequent bandage changes, would also be difficult with a wild animal...
Peyton remembered reading about a group in Brazil that had used sterilized tilapia skins to successfully treat burns on humans. While the treatment had never been performed in the United States and never on animals, Peyton decided it was worth trying.
“The high collagen level in the fish skins helps with healing and acts like a matrix,” said Peyton. “It would act as protection and it was pretty inexpensive and available.”..
“In our view, there was no downside,” said Peyton. The fish skins are even edible, and no reactions to the skins were observed. The mountain lion, which received the same treatment as the bears, ended up eating his.
18 December 2018
Theo Jansen's Strandbeests (kinetic sculptures)
Via within the crainium.
Reposted from 2011 to add this remarkable new video:
And here's some good news for readers searching for gifts for children or spouses who have an engineering bent: model strandbeests are available as kits, and can be propelled by a human breath.
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