Saturday, September 04, 2021
Friday, September 03, 2021
Thursday, September 02, 2021
Wednesday, September 01, 2021
AMAZING PLACES : ANGKOR WAT
ANGKOR WAT (FULL EPISODE) |
ACCESS 360 WORLD HERITAGE
651,828 views
Jun 19, 2021
National Geographic
18.3M subscribers
Workers strive to save the
temples of the Angkor World Heritage site.
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Angkor Wat (Full Episode) |
Access 360 World Heritage
https://youtu.be/C5jpbwizxBs
National Geographic
https://www.youtube.com/natgeo
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Q&A : WHAT IS AN ATOM AND HOW DO WE KNOW?
WHAT IS AN ATOM AND HOW DO WE
KNOW?
1,773,202 views
Sep 19, 2018
Stated Clearly
435K subscribers
Ever wonder how we actually
know that atoms exist? Here we'll learn what atoms are and exactly how
scientists went about figuring all this out.
Play the Bond Breaker game
here: http://www.castl.uci.edu/games/bondbr...
Note about the Nitrogen atom
Image:
The nitrogen paper was
supposed to be published along with this animation but the journal decided the
nitrogen paper was too redundant. They already published the same imaging
technique with an Ag atom back in 2017. Long stroy short: The only place to see
the nitrogen atom is in this animation. That said, if you want to see an Ag
atom imaged using the same technique, see this paper here: https://pubs.acs.org/doi/10.1021/acsn...
Each pixel in the image
represents a reading from the scanning probe. The colors show us how high that
particular part of the atom's electron cloud is compared to the substrate it's
sitting on. Red is highest, blue is lowest. We are only seeing the outline of
the electron cloud, not the nucleus.
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Correction: In this video I
state that Jabir ibn Hayyan was Arabian, but there is uncertainty about this
among historians. He may have been Persian. Like many influential people of his
time, his story is almost mythical, with multiple origins being found in
historical writings.
Also, he never used a Bunsen
burner (which is what I drew him using) that wasn't invented until 1856. Jabir
likely burnt wood or other solid fuels to heat his reactions.
Arabic Subtitles by Ammar
Abu-Shukur and Mohammed Baset
#chemistry #atom #theory
#science
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INCREDIBLE FACTS : SPACER INSTALLATION ON 765,000 VOLT LINE !
SPACER INSTALLATION ON
765,000
VOLT LINE !
10,151,474 views
Feb 21, 2013
Slowcheeter21
24.1K subscribers
Energized service performed.
Flying with one of the best, we make quick work of a span before my gopro gives
out to bonding on and off of the wire.
Grateful
thanks to
Slowcheeter21
and YouTube and all the others who made this video possible
FASCINATING FACTS : WARMEST TENT ON EARTH (SIBERIAN ARCTIC WINTER)
WARMEST TENT ON EARTH -
PITCHING IN THE SIBERIAN
ARCTIC WINTER
11,560,432 views
Feb 10, 2021
Nomad Architecture
401K subscribers
The Nenet reindeer herders
need to move their tent every few days throughout most of the year. Every time
they migrate they must pack the whole tent away, drag it across the tundra on
sledges, and erect it again in a fresh place, sometimes in temperatures of
minus thirty degrees. Survival depends on working together as a team.
After staying in the wooded
taiga for two months they start to migrate north following the ancient paths of
migrating reindeer (caribou). In four months they will travel up to 1200km and
must pack and move every three to five days to keep up with their herd. They
must reach their summer quarters before the snows melt and flood great rivers
with icy waters too cold and deep for the calves, born along the way, to cross.
Behind the tent an invisible
line extends out into the tundra. It is called the sawei line, and a woman
cannot cross it. It will bring bad luck to the tent. It was hard for them to
explain exactly why, it is much stronger than a superstition and is connected
to the spirit pole that stands at the back of the tent. This pole is sacred and
a woman cannot cross underneath it either, and only a shaman may sit in this
holy place. The origins of this are a little lost, there may be practical
reasons, for example the back of the tent is traditionally where the men work,
often together, so they have to be able to move about freely, but there are
often two families in a single tent, so maybe one day the women just agreed
territories to stop tripping over each other. Maybe it has such a mundane
origin, or maybe there are real spirits that come up to the tent from behind
and would bring harm to any women caught in the wrong place. If several tents
pitch together, their lines must not cross either, so they tend to camp in a
straight line to avoid this.
In answer to the many
questions - on personal hygiene,
everyone washes using a bowl of soap and hot water, just like most of our
grandparents did before everyone had pipes and taps. There is no toilet in the
tent as some have suggested, they find a spot a few hundred metres away. They
are not pitching on a lake but a small mound where the snow blows a little
thinner, Gas companies have been in the area and gave away snowmobiles as part
of land access negotiations. Also sometimes there are competitions with them as
prizes, sometimes they sell a load of reindeer and buy one. Most families now
have at least one but the reindeer are still used a lot. Yes, they use a sled
to go to town, or trading posts to buy groceries.
I wanted to catch the entire
process, but have edited it down a little from the 40-45 minutes it takes to
get from the open snows to a warm cosy home.
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Tuesday, August 31, 2021
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