601
Left: how humans see starlings.
Right: how starlings may see each other - with bolder markings and more colour
The amazing world of UV vision, seen through the eyes of…. birds.
[read more: buff.ly/31xLkvX]
602
The Gyro-X two-wheeled car from 1967 was balanced by the whirling, beachball-sized gyroscope tucked under its hood [full video: buff.ly/3AfqZyS-]
603
Bats are not rodents. They are their own group called Chiroptera. They are more closely related to cats than rats
[📹 Tracey Jolliffe]
[read more: buff.ly/3ekNqI3]
604
What are those red filaments in the sky? They are a rarely seen form of lightning confirmed only about 30 years ago: red sprites. This image was taken by Yuri Beletsky in 2021 from Las Campanas observatory in Chile [read more: buff.ly/31JcBOB]
605
An example of how AR glasses will manage your physical items. It may be possible to look at your credit card, see your account statement and balance, and even place new orders
[📹 artirilmisgerceklik: buff.ly/3AB6P3O]
606
Wanna see how a new island is made? Watch the Kavachi undersea volcano as it erupts underwater in the middle of the Pacific Ocean, in the Solomon Islands
[full video: buff.ly/2HvCzsT]
607
This simple gif by Jakub Nowosad shows the effect of the Mercator projection on the real size of continents and countries on a planisphere
[source, read more: buff.ly/2rrI5Wz]
608
This picture by Steve Curle is probably true and not digitally manipulated. It shows a 5 meter crocodile killed in Zimbabwe after becoming a problem animal which had been attacking and killing fully grown cows [read more on Snopes.com: buff.ly/30cCZRl]
609
J58, the SR-71's secret powerhouse, has been called "black magic": an engine that can push a plane from 0 to Mach 3.2 without breaking a sweat. Here's how it works [video by TechLaboratories: buff.ly/2PySC23]
610
This video shows how a harbor pilot boards a moving 200 m long ship moving fast into a sea of ice
[source: buff.ly/2IxKIRt]
611
Echidnas, instead of having teats like other mammals, have milk patches which excrete milk for their young to lap up. This is why wildlife hospital nurses have to feed a 'puggle' from the palm of their hands, so it can lap milk as it would do in the wild: buff.ly/32U3yJA
612
Inspired by solar furnaces, this parabolic mirror concentrates light onto a focal point, and can be consequently used for more mundane tasks in place of industrial purposes
[how it works: buff.ly/3vZapSz]
[📹 buff.ly/3vZJYvU]
613
My kidney transplant will be on Wednesday, Nov 2nd. My sister and I will be hospitalized on Monday, Oct 31st. As a consequence, this account will stop its activity for some time as of today. Thanks again for your support and for following my account 1/🧵
twitter.com/Rainmaker1973/…
614
This beautiful bird, a male Cabot's tragopan, lives in the hilly evergreen forests of China, where it forages for leaves, fruit, seeds and insects
[read more: buff.ly/2IxQQ96]
[📹 buff.ly/3LiuCJp]
615
A massive flock of starlings descended near the city of Patras, Greece on Wednesday and the result was a kind of a tsunami of birds
[source, read more: buff.ly/3B9DH28]
616
Take your time to understand exactly how differentiation is defined using the concept of limits
[source: buff.ly/2rZ2cQa]
617
In this popular clip, Armenian steel worker Arkady Mgdsyan takes advantage of the Leidenfrost effect
An insulating vapor layer temporarily prevents the molten metal from harming him
[source: buff.ly/2LF6nsz ]
[read more: buff.ly/3p2AnRb]
618
There's a forest in Poland where all the trees have this weird shape and nobody is sure about the reason [read more, hypotheses: bit.ly/2rbshcI]
619
A sneaker wave is a disproportionately large coastal wave that can appear in a wave train without warning. This video was shared by Marcella Ogata-Day to help bring awareness of the dangers of sneaker waves
[source, read more: buff.ly/3GyVgu9]
620
Located in Brno, Czechia, this is a waterfall clock. The amount of every line of water is controlled by a computer. By controlling the length of the lines, pictures and numbers can be shown in the air.
[📹 buff.ly/3CImb7i]
621
Some McDonald's in Japan have installed sink systems that come with a slot that "sanitizes" your smartphone. It's a system called WOSH developed by Japanese company WOTA.
[read more: buff.ly/3FAyvZl]
622
Every 4 to 10 years, certain oak populations will synchronize to produce almost no acorns at all (starving off mammals), only to rain them down excessively the following year. This happens because only one in 10,000 acorns results in an eventual tree buff.ly/3oIHlK5
623
Sam Cossman & George Kourounis become among the first explorers to step foot inside the worlds most dangerous and inaccessible volcano, Marum Crater. More people have visited the moon than the firey depths of this spectacular and deadly location [video: buff.ly/3E3CDgm]
624
The Butterfly Mendocino Motor by Semyon Nazarov is the simplest version of this kind of motor with only two photovoltaic cells mounted with care to ensure precision balance. This motor will spin quietly to high RPMs on any sunlit windowsill [read more: buff.ly/3qGqGpJ]
625
Panulirus ornatus is a large spiny lobster with 11 larval stages. It migrates annually from the Torres Strait to Yule Island in the Gulf of Papua in order to breed
[read more: buff.ly/3C7uLg2]
[photo: buff.ly/3wbjMhV]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links