726
The menstrual cycle
1. Menstrual phase (0:00 - 0:07)
2. Follicular phase (0:08 - 0:15)
3. Ovulation phase (0:16 - 0:27)
4. Lutheal phase (0:28 - 0:33)
[read more, phases: buff.ly/3BLlytp]
[📹 IG design_cells: buff.ly/3f0um5O ]
727
This classic video shows what would happen if a large asteroid (diameter ~ 500 km) hit the Earth somewhere in the Pacific Ocean
[Anselmo La Manna + read more: buff.ly/3DlBgcq]
728
A candle snuffer is a clever and extremely simple mechanical device that can automatically extinguish a candle in case one forgets to blow it out
[source: buff.ly/3hqGPAR]
[this specific model: buff.ly/3DWwowr]
twitter.com/NaoCasanova/st…
729
Cork harvesting is done entirely without machinery without inflicting permanent damage to the tree. A cork oak can be harvested from five to seventeen times in total
[read more: buff.ly/3BgZh6h-]
[📹: buff.ly/3KOCjGW-]
730
This 20,000 meter high tornado spawning supercell was filmed by Rich Isaacman on May 16, 2022 near Lubbock, Texas
[source: buff.ly/3DfZpEj]
731
The Stadio Meazza, commonly known as San Siro, is a football stadium in the San Siro district of Milan. Its walkways are spiral shaped and the motion of the walking people gives you the illusion of an automatic rotation buff.ly/2KuwX3U [gif: buff.ly/3opaQSO]
732
Warthogs living in Uganda have learned to rid themselves of annoying ticks by seeking out the grooming services of some accommodating neighbors: a group of mongooses looking for snacks
[full video, BBC: ow.ly/LdK250l2h4F]
733
The waterfall swing is an interactive installation what combines art and science. Riders pass through openings in a waterfall created by precisely monitoring their path via axle-housed encoders
[read more: waterfallswing.com]
734
If you're old enough, you will recognize this sounds and appreciate the spectrogram of a dial up modem handshake. The full video's caption reports a verbal translation/breakdown of the process
[Full video, Scotty H: buff.ly/3zVFdom]
twitter.com/tatertotsmcgee…
735
Why is A4 paper called A4? 'Cause of #Math
A4 is 1/2 an A3, 1/4 of A2 & it’s 1/16 of A0 which has an area of 1 m² (but it isn’t a square).
They all have an aspect ratio a/b = √2, so each one can be scaled to other sizes without being distorted
[more: buff.ly/3TdKWOE]
736
Paul Barton is a concert-pianist playing music to blind, injured and orphaned elephants with extraordinary results
[read more: buff.ly/2ncGGBL]
[videos: buff.ly/2I0DXqH]
737
Kayleigh Grant was collecting rubbish from the sea, roughly two miles off the Hawaiian shore when she found a tiny octopus using plastic for a home
[full video + read more: buff.ly/3PVNX3T]
738
How to trap lightning in a block (and release it with a simple hammer blow)
[read more: bit.ly/2rqr9RB]
[full video: buff.ly/2lJTuyM]
739
Every year, across Japan there are literally hundreds of Firework Festivals. "Yonshakudama" is the largest firework shell in the world launched for the Katakai-Matsuri Festival: 420 kg of weight
[source, full video: buff.ly/3AqBIYP]
740
This is what your supermarket would look like without bees
[source, read more: ow.ly/9iHH30q1HvY]
741
The stunning optical illusions by prof. Kokichi Sugihara
[video: buff.ly/2UzhxAB]
[read more: buff.ly/2HthCRt]
742
Pulled string art is a simple technique that uses paint and a strings to obtain remarkable and always unexpected results [read more: buff.ly/2It4CJT]
743
Normally, there aren't grandparents around when an animal is born. But this clip of a bonobo playing with her baby granddaughter tells us there are notable exceptions
[read more: buff.ly/2J1nPHm]
[📹 Cincinnati Zoo: buff.ly/3F8FpRO]
744
This video by JBA Trust uses a wave tank to illustrate how different combinations of coastal defences affect the potential for flood risk, measuring the ml of overtopping water corresponding to liters/h in real life [full video: buff.ly/2QtmVb7]
745
Zhen Xian Bao or Chinese thread book is a yarn collection box made using paperfolding techniques developed from a fascinating tradition from remote South West China. Boxes are basically everywhere in it [source: buff.ly/2NltNWi] [tutorial: buff.ly/3qodaYO]
746
The Royal Gorge is a canyon located west of Cañon City, Colorado. The bridge crosses the gorge 291 m above the Arkansas River and held the record of highest bridge in the world from 1929 until 2001
[📹 Marcos Parra: buff.ly/3ewIWl3]
747
The story of the unusual friendship between a female grey wolf and a male brown bear. They were spotted every night for 10 days straight, spending several hours together between 8pm to 4am. They would even share food together [read more: ow.ly/rKP350Afeni]
748
In order to ensure sufficient oxygen within their burrow, prairie dogs use the Bernoulli’s principle. One of the entrances is built with a raised mound of dirt, while the other is not. This determines different wind velocities and different pressures: buff.ly/3BCbtO5
749
There’s a tiny, innocent-looking rodent called the grasshopper mouse who kills highly venomous arthropods like scorpions and forcipules and it howls at the moon to claim its territory
[videos + read more: buff.ly/3RnIkNh]
750
Fish can use jellyfish as a suit of armor and general protection from predators, as we can see in this footage captured by Brent Collins while snorkeling along Double Reef on Guam in 2013
[source: ow.ly/q3CV50xAUQC]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links