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21.04.202506:30
Negative Pressure Wound Therapy (NPWT), also known as Vacuum-Assisted Closure (VAC) therapy, is a wound management technique that uses a vacuum pump to apply negative pressure to a wound, promoting healing by removing fluid, debris, and bacteria. 🦶
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Did you know? 🎓
19.04.202515:34
One may think rodents run on the wheel because in captivity, but several studies demonstrated that even wild rodents use running wheels placed in nature, even when no extrinsic reward is provided.
These are wild mice.
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These are wild mice.
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18.04.202510:33
Vallam Kali is a traditional boat race in Kerala, India, primarily celebrated during the harvest festival of Onam.
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Did you know? 🎓
15.04.202515:35
10 years ago today, Mars Curiosity rover captured this iconic sequence of images of a blue sunset on Mars
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Did you know? 🎓
22.04.202506:34
The 1940s Field Marshall tractor diesel engine didn't have an electric starter.
It required a piece of burning paper and the option of hand-cranking or... Using the explosion from a shotgun shell to initiate combustion.
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It required a piece of burning paper and the option of hand-cranking or... Using the explosion from a shotgun shell to initiate combustion.
Did you know? 🎓
20.04.202515:30
How do you make pysanky eggs?
The process involves applying melted wax to the eggshell in a design, then dipping it into different colored dyes.
Once the final layer of dye is applied, the wax is melted off.
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The process involves applying melted wax to the eggshell in a design, then dipping it into different colored dyes.
Once the final layer of dye is applied, the wax is melted off.
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19.04.202510:35
Controlled burns help reduce devastation from wildfires
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Did you know? 🎓
18.04.202506:32
The town of Hay-on-Wye in Wales is completely dedicated to books and has 26 bookshops but only 2000 residents. That’s one bookshop per 77 people.
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Did you know? 🎓
16.04.202515:34
Borgund Stave Church in Norway was built sometime between 1180 and 1250 AD.
It's part of of a group of medieval churches almost only present in Scandinavia, built with wood only and without using a single nail
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It's part of of a group of medieval churches almost only present in Scandinavia, built with wood only and without using a single nail
Did you know? 🎓
15.04.202510:32
Venice is built on wooden piles instead of directly on the surface of the islands.
There are over 100.000 wooden stilts beneath the islands, which originally served as the foundations for the fishermen's houses who founded Venice.
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There are over 100.000 wooden stilts beneath the islands, which originally served as the foundations for the fishermen's houses who founded Venice.
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21.04.202515:34
Average Everyday Altitudes of Birds
- In this animation, we show the average daily altitudes of different birds throughout their typical routines. From low-flying songbirds to powerful migrators, each species has its own flight zone in the sky. Some stay close to the ground, weaving between trees and rooftops. Others rise far above, even reaching altitudes where commercial airplanes fly. It’s a fascinating look at how birds use the vertical space of our world, something most of us never think about.
Did you know? 🎓
- In this animation, we show the average daily altitudes of different birds throughout their typical routines. From low-flying songbirds to powerful migrators, each species has its own flight zone in the sky. Some stay close to the ground, weaving between trees and rooftops. Others rise far above, even reaching altitudes where commercial airplanes fly. It’s a fascinating look at how birds use the vertical space of our world, something most of us never think about.
Did you know? 🎓
15.04.202506:31
How to memorize the Greek alphabet, widely used in math and physics, with a song.
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Did you know? 🎓
20.04.202506:31
Deep sea diving isn't for the faint hearted.
After the dive, its a window of around 5 mins to get stripped & into the decompression chamber.
Flying is not recommended for at least 24 hours.
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After the dive, its a window of around 5 mins to get stripped & into the decompression chamber.
Flying is not recommended for at least 24 hours.
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18.04.202515:34
In sidecar racing, the passenger helps the driver when it comes to drifting and it's nicknamed the "acrobat" or the "monkey".
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Did you know? 🎓
17.04.202510:31
The first ingredient of any firework is the ancient explosive black powder, made by 75% potassium nitrate, 15% charcoal and 10% sulfur. Once lit with a fuse or spark, the sulfur melts first at 112.8°C.
The sulfur flows over the potassium nitrate and charcoal, which then burn. This combustion reaction quickly produces a large amount of energy and gas – in other words, an explosion.
But the colors of the fireworks are determined by the elements used.
There are a number of different elements that, when added to a firework and heated, release different wavelengths of light that appear as different colors:
- Strontium makes red.
- Barium produces green.
- Copper burns blue.
- Sodium releases a yellow color.
- Titanium is white.
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The sulfur flows over the potassium nitrate and charcoal, which then burn. This combustion reaction quickly produces a large amount of energy and gas – in other words, an explosion.
But the colors of the fireworks are determined by the elements used.
There are a number of different elements that, when added to a firework and heated, release different wavelengths of light that appear as different colors:
- Strontium makes red.
- Barium produces green.
- Copper burns blue.
- Sodium releases a yellow color.
- Titanium is white.
Did you know? 🎓
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да медыяконтэнту
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16.04.202506:33
Daddy longlegs tend to group in clusters like this one: this behavior is known as “aggregation.”
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Did you know? 🎓
14.04.202515:33
Rabbits are nocturnal animals. They sleep most of the time during the day and their lifestyle can be a little confusing for their owners.
They sleep about 12 to 14 hours a day.
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They sleep about 12 to 14 hours a day.
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