This clip shows a 1940s experiment assessing the safety of a car hit by lightning, demonstrating how it’s a Faraday cage
\[source: bit.ly/3RpGs75 (https://bit.ly/3RpGs75)\]
\[read more: bit.ly/3P10Xpd (https://bit.ly/3P10Xpd)\]
https://nitter.moomoo.me/Rainmaker1973/status/1654580293968224256#m
Electro-mechanical versions of 7 segment displays use the most different actuation systems: this one uses a set of levers and cams that move and rotate the segments
\[video: buff.ly/3MrZIgM (https://buff.ly/3MrZIgM)\]
https://nitter.moomoo.me/Rainmaker1973/status/1654460148113448961#m
This 5.7 terapixel interactive mosaic image of #Mars (https://nitter.moomoo.me/search?q=%23Mars)
\[Caltech, ESRI: buff.ly/3Gue3sD (https://buff.ly/3Gue3sD)\]
https://nitter.moomoo.me/Rainmaker1973/status/1654421078524022787#m
Prinoth Panther T14R is a large tracked rotating dumper which allows the operator to reset the vehicle’s upper and lower portions’ alignment (front to back) by simply pushing a button
\[read more: buff.ly/3GRzB1e (https://buff.ly/3GRzB1e)\]
\[video: buff.ly/3NkXZuQ (https://buff.ly/3NkXZuQ)\]
https://nitter.moomoo.me/Rainmaker1973/status/1654105902624940032#m
The genus Morpho includes more than 29 accepted species and 147 accepted subspecies, found mostly in South and Central America. Their colors are not a result of pigmentation, but are an example of iridescence
\[read more: buff.ly/3CIff7S (https://buff.ly/3CIff7S)\]
nitter.moomoo.me/Gekikawa\_Dbts/st… (https://nitter.moomoo.me/Gekikawa_Dbts/status/1644507755921969153/video/1)
https://nitter.moomoo.me/Rainmaker1973/status/1653842255201853440#m
The robot bartenders on Royal Caribbean's cruise ships can mix up to two drinks per minute or 1,000 a day, while travelers can create their own with a tablet. And, their movements are modeled after a NYC ballet dancer
\[learn more: buff.ly/3VJe4Q9 (https://buff.ly/3VJe4Q9)\]
https://nitter.moomoo.me/Rainmaker1973/status/1653803001444806663#m
In January 1697, Johann Bernoulli challenged Isaac Newton with a six month deadline to solve this problem: Newton solved it going to bed that same night with the brachistochrone curve
\[read more: bit.ly/2jjD2kW (https://bit.ly/2jjD2kW)\]
https://nitter.moomoo.me/Rainmaker1973/status/1652986218718830592#m
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
\[Full video, Scotty H: buff.ly/3zVFdom (https://buff.ly/3zVFdom)\]
https://nitter.moomoo.me/Rainmaker1973/status/1649423803234111488#m
Tezuka Sota created a robotic hand entirely made of water resistant paper, not requiring any mechanical parts, such as shafts or bearings
\[video, assembly: buff.ly/3lC0r3C (https://buff.ly/3lC0r3C)\]
\[read more: buff.ly/3lwHXBH (https://buff.ly/3lwHXBH)\]
https://nitter.moomoo.me/Rainmaker1973/status/1649399455223799813#m
In Roman timekeeping, duration and distribution of horae and vigiliae was highly variable. The duration varied with the seasons: Winter days being shorter, the hours were correspondingly shorter and vice versa in summer.
Here's how it worked: buff.ly/2Jx4lv1 (https://buff.ly/2Jx4lv1)
https://nitter.moomoo.me/Rainmaker1973/status/1649328555443060741#m
Northern cardinals, the 'romantic' birds that mate for life, travel together, sing before nesting, and during courtship, feed seed beak-to-beak
\[read more: bit.ly/2mJ7KYy (https://bit.ly/2mJ7KYy)\]
https://nitter.moomoo.me/Rainmaker1973/status/1649317925780615168#m
Fun fact: 69 is the only natural number whose square (4761) and cube (328509) use every decimal digit from 0–9 exactly once
\[source: buff.ly/3Fh21S7 (https://buff.ly/3Fh21S7)\]
https://nitter.moomoo.me/Rainmaker1973/status/1649060100802330625#m
SpaceX Starship experienced a rapid unsheduled disassembly before the Super Heavy separation, but it's now one step closer to the final success. It was an absolute breathtaking event.
This picture remains possibly the most amazing and unreal shot of today.
https://nitter.moomoo.me/Rainmaker1973/status/1649048986647691265#m
A reminder of the projected trajectories of Super Heavy and Starship, whose flight will last about 90 minutes before splashing down in the Hawaii
\[📹 Cindy Pom\]
nitter.moomoo.me/elonmusk/status/1649032884517482497#m (https://nitter.moomoo.me/elonmusk/status/1649032884517482497#m)
https://nitter.moomoo.me/Rainmaker1973/status/1649035624152743937#m
Siphon tubes are a basic implement used in irrigation to transfer water over a barrier (such as the bank of a raised irrigation canal), using the siphon principle
\[read more: buff.ly/39e71b2 (https://buff.ly/39e71b2)\]
\[📹: buff.ly/3Dlonid (https://buff.ly/3Dlonid)\]
https://nitter.moomoo.me/Rainmaker1973/status/1648974473347977217#m
The SpaceX Starship orbital flight test has a new schedule: now targeting for #Today (https://nitter.moomoo.me/search?q=%23Today), April 20.
The 62 minute launch window opens at 08:28 CT (13.28 UTC - 15.28 CEST).
\[watch: buff.ly/41kS0gG (https://buff.ly/41kS0gG)\]
https://nitter.moomoo.me/Rainmaker1973/status/1648971676175020033#m
Dennis Hlynsky is a professor at Rhode Island School of Design. His hobby is capturing the raw rhythm of life in videos and long exposure photos, like this remarkable view of what happens in some minutes of activity outside a beehive
\[source: buff.ly/2IrvUkJ (https://buff.ly/2IrvUkJ)\]
https://nitter.moomoo.me/Rainmaker1973/status/1648969016520605698#m
The story of Bobbie the Wonder Dog, who walked a distance of at least 4,105 km through U.S. plains, desert, and mountains, swimming in rivers and even crossing the Continental Divide in the coldest part of winter, to finally return home to his family bit.ly/2mQBzGW (https://bit.ly/2mQBzGW)
https://nitter.moomoo.me/Rainmaker1973/status/1648964042520772611#m
1) Take your calculator and pick any number made just of 5s (55, 555, 5555, ...).
2) Calculate its reciprocal (1/555 ...),
3) Calculate the sine of this number.
Is the result familiar?
This is why
\[source: bit.ly/2ZMyF7P (https://bit.ly/2ZMyF7P)\]
https://nitter.moomoo.me/Rainmaker1973/status/1648955684652736513#m
The first time Einstein wrote E=mc², it wasn't exactly E=mc²
\[read more: bit.ly/2D5vLAb (https://bit.ly/2D5vLAb)\]
https://nitter.moomoo.me/Rainmaker1973/status/1648950479315976195#m