Nature and digiscoped nature. This channel contains mainly bird videos (videscoped through a birding telescope) and physics demos. There are a couple of videos of mammals and reptiles, as well as of natural phenomena, like eclipses of moon and the sun etc. Most bird videos are from Finland or Europe in general - some recorded in Japan and the US have been included.
Yes, something like that, although since this is in a gas flow I'd call it Rayleigh scattering. Now the change in colour is interesting: First blue then white. Cigarette smoke is blue if not inhaled and white if inhaled. The blue has smaller particle size and white larger, due to being covered by water molecules (from the lungs). In this case I'm guessing that the initial helium gas flow is so quick that the ice crystals formed remain small. Later when the interior of the siphon cools down the gas stream is slower and larger ice crystals form have time to form. (Ice crystals come of course directly from the moisture in the air)
Had a similar experience a few days back. I was walking to the dog park (but without my dog). On the side of the path, a small, unaccompanied, reddish dog was sitting - just watching the world go by. Without my own dog in tow, I thought I was a good chance to get a pat from this contented pooch. So, I started talking to it, making little kissing noises as I approached. It looked at me calmly and stood up. “Nice tail!” I thought. As I got to within about ten feet, Mrs Fox declined my invitation for a pat and calmly wandered off.
The cylinder is filled with CO2 gas, which dissolves into the dyed water. Happens in about 48 hours. Dissolved water gets replaced by water, hence the quick rise of the water column. Simultaneously a much slower process sets in: Across the air-water-CO2 interface also air will diffuse in the opposite direction (relative to CO2) although at a much much slower rate, due to the poor solubility of N2 and O2. Because of that the cylinder never fills completely with water. After ~48 hour we have a small layer of air trapped in the cylinder, under the pressure of P0 minus ΔP (P0 is ambient pressure and ΔP is the hydrostatic pressure of ~20 cm of water, i.e. the column). That tiny pressure difference of ΔP with the outside atmosphere gives rise to a continued extremely slow diffusion of air into the cylinder, until after 18-30 years (supposedly) water levels should even up. There's a small barometer effect leading to the oscillations seen in the water level.
Egyptian Geese are the best! Some couples count to my best friends and I helped them raising goslings over the years. I love bonding with these very intelligent, very social, friendly, lovable beautiful critters!
The red colour does not come from the food (like it does for flamingoes). It fades towards the winter and returns in the spring, but is probably not related to seeds the bird eats.
Green bottlefly, I guess its kinda pretty for a fly and they're not as annoying as other flies they kinda just do their own stuff outside so they're cool i guess
this randomly got recomended to me, I have a feeling this will be one of those videos that get millions of views and get's recommended to people every few years 😂
No idea how the algorithms of RU-vid work on this. I have some (rather good bird) videos with very few views. Anyway the title says what the video is about. So no clickbait there.
