2276
Hummingbirds stay in the nest for 18-22 days. The mother feeds her nestlings on small arthropods and nectar by inserting her bill into their open mouth, regurgitating the food into its crop
[full video: buff.ly/32e4vAS]
2277
To demonstrate how computers work, Alex Gorischek has made a physical example of how binary logic gates work using pulleys and weights. For anyone who doesn’t know much about logic gates, it’s a great lesson in one of the fundamentals of circuitry [video: ow.ly/WTvD30obozP]
2278
Cohesion and adhesion are the stickiness that water molecules have for each other and for other substances. This is what we observe when we talk about surface tension [buff.ly/2JOB0sm]. This gif shows what happens when water stickiness is broken [buff.ly/3nmYnhR]
2279
3D printing is a recent but promising technology available to professional prosthetists and amateurs alike. So anyone with access to a 3D printer and a DIY mentality can create a bespoke prosthesis at a low price point. Like this prototype by William Root buff.ly/3ucW6qh
2280
This is a feather star captured while swimming off the coast of Japan. Feather stars are crinoids or crinoidea, meaning “Lily-like” in Greek, and thrive in the Indian Ocean up to Japan, as well as in the Atlantic [full video: buff.ly/32OJR5m]
2281
In 1993, AT&T launched an advertising campaign directed by David Fincher that somehow predicted pretty much everything about how we work and live today: tablets, smart watches, GPS, on-demand entertainment, and more
[read more: buff.ly/3F6SbDR]
2282
This typewriter AEG Mignon n. 4 was built in 1925. It's a very compact pointer typewriter with interchangeable type cylinder and keyboard: more than 36 different fonts were available
[full video by grvene: buff.ly/2QEaCsO]
2283
Born #Today in 1908, Mary G. Ross was the first known Native American female engineer, and the first female engineer in the history of Lockheed, remembered for her work on aerospace design and design concepts for interplanetary space travel [read more: buff.ly/2OX5Gtd]
2284
The story of Grigori Perelman, the man who solved the the Poincaré Conjecture, a problem that took a century for mathematicians to solve. He was offered the prestigious Fields medal and $1,000,000 and he declined both [read more: ow.ly/siwv30nG3bX]
2285
This rock is a narrow vertical 9 meter high column of basalt hanging on on cliffs overlooking St. Mary's Bay on the Bay of Fundy. No one knows for sure how long it has been like this but it could be thousands of years [read more: ow.ly/DbMB30nMqsW]
2286
The Fourier Transform explained in one sentence
[source and read more, by Stuart Riffle: buff.ly/3ILfsdD]
2287
An osprey can take live fish weighing up to 2 - 2.8 kg and carry it for long distances. This footage filmed by Ashley White in Myrtle Beach, South Carolina in 2020 shows one transporting a Spanish Mackerel
[source, read more: buff.ly/3czOlHG]
2288
The coast around Benagil, Portugal, is made up of Miocene limestone sitting on much older rocks created in the Mesozoic: over time, the limestone built up, with the layers that make up the Benagil Sea Cave forming about 20 million years ago
[read more: buff.ly/2kdzkMT]
2289
Ground pangolins walk on their hind legs, occasionally using their forelegs and their tail for balance [read more: buff.ly/2X3sImh] [video: buff.ly/3C1Kg6y]
2290
Discover the functions of the nervous system, and how it can be divided into the central nervous system and peripheral nervous system
[full video, 3D4Medical: buff.ly/3QlULJ3]
2291
Polaris, aka North Star, is a very faint celestial object in the sky, but is indeed a triple star system whose biggest component is 5.4 times the solar mass (M☉). It's s 4000 times brighter than our Sun and it's located 433 light years away
[read more: buff.ly/3odtlrG]
2292
There's a nice natural geological formation in Iceland called the 'Elephant rock' for a precise reason [read more: bit.ly/2kBhRAH]
2293
This video by Tod's Workshop shows a 160lbs English warbow shooting full weight medieval arrows at a reproduced armour in a sort of medieval mythbusting
[full video, Tod's Workshop: buff.ly/3JhpEv1-]
2294
Born #Today in 1919, Maurice Hilleman developed over 40 vaccines, among which measles, mumps, hepatitis, chickenpox, meningitis, pneumonia: an unparalleled record of productivity that saved more lives than any other scientist of the 20th century buff.ly/2o9ChmY
2295
These are the unusual ice patterns that wildlife photographer Karl Ramsdell captured with a drone in Mirror lake, New Hampshire. This might be caused by heat rising from the water below
[read more: buff.ly/2QH7s4V]
[source, more photos: buff.ly/3fbmew6]
2296
This is a rare color footage of the tallest person ever in recorded in history: Robert Wadlow stood 2.71 meters and weighed 223 kg. This home movie footage was taken during one of Wadlow's public appearances in the 1930s
[video: buff.ly/2JG9Dmq]
2297
The triple point occurs where the solid, liquid, and gas transition curves meet. It's the only condition in which all three phases can coexist, and is unique for every material. Water reaches it at 0.01° C and at a pressure of 0.006 atm
[📹UCSC Physics: buff.ly/2OMrpoC]
2298
A powerful storm brought sub-zero temperatures to the northern region of Tabuk, Saudi Arabia in February 2021. The rare occurrence was captured by TikTok user x509o with this video of snow underneath the sand [full video: buff.ly/3uIpbed] [user: buff.ly/3sJdEte]
2299
This 1.5 -ton statue of Alan Turing was made by Stephen Kettle and was commissioned by the billionaire Sidney Frank. Located at Bletchley Park, it's made of about half a million pieces of slate quarried in Wales
[source: ow.ly/LxmR30obp8R]
2300
The Tacoma Narrows Bridge's collapse on November 7, 1940 has been described as "spectacular" and in subsequent decades has attracted the attention of engineers, physicists, and mathematicians [read more: bit.ly/1VFh2T2 [watch the video: buff.ly/2HiRjzt]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links