Interesting Engineering

2022-06-13 23:27:01 Astronomers may have detected the first-ever wandering black hole thanks to the ingenuity of researchers and the precision measurements made possible by the Hubble Space Telescope, CNET reported.
NASA estimates that there are more than 100 million black holes in our galaxy, the Milky Way, even though nobody has so far identified one conclusively. It is difficult to gather evidence of an object that does not reflect light. The blackhole photos that have been popular on the internet are actually images of the Event Horizon and not a Black Hole per se.
Astronomers, therefore, turned to another ability of black holes to warp space to detect them. When a black hole passes between Earth and a distant star, the warping of space results first in deflection and then amplification of starlight. The telescopes gaping at the sky for such events can capture this phenomenon called gravitational microlensing, which is then followed up by the Hubble Space Telescope.

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2022-06-13 19:19:45 Google has sent Blake Lemoine, the engineer who claimed that the artificial intelligence (A.I.) powered chatbot he had been working on since last fall had become sentient, on paid leave, The Guardian reported.
The incident has brought back the focus on the capabilities of A.I. and how little we understand what we are trying to build. A.I. is being used to make cars autonomous and help us discover new drugs for incurable diseases at the moment. But beyond the tangible short-term uses of this computing prowess, we do not know how the technology will develop in the long run.
Even Technoking Elon Musk has warned that A.I. will be able to replace humans in everything they do by the time this decade ends. So, if a chatbot has indeed become sentient, it should not be shocking.

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2022-06-13 05:31:13 Most high school students struggle with the concept of relativity. (And, to be fair to those students, most adults around the world couldn't readily describe the theory of relativity without doing a bit of research first.) However, one high school student figured out a clever way to appropriately explain the theory of relativity. Young Hillary Diane Andales managed to take apart and explain the theory in a short YouTube project. The video itself might come in just under three minutes long, but the $250,000 main prize will certainly last for considerably longer.

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2022-06-12 22:01:07 It turns out that chocolate is more useful than just a comfort food with a few health benefits added into the mix; the world's most popular snack can also be used as part of a science experiment that lets you measure the speed of light.
An MIT student, David Berardo, revived the popular science experiment on Twitter — the idea is thought to have first come from a National Science Teaching Association (NSTA) meeting in Atlanta in 2004.

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2022-06-12 13:01:32 Ultra-linear amplifiers, stereophonic sound, and the radar system that helped Britain win World War II have something in common —they’re all inventions of the same man, English electronics engineer Alan Dower Blumlein.
Blumlein was born in 1903 in London. It is said that his passion for electronics started very early in his life, having supposedly repaired his father’s doorbell at the age of seven. He got a bachelor’s degree in Science with first-class honors in 1923 and started working for the Western Electric Company in 1924. There, he designed weighting networks and improved analog telephony with a renewed load coil that avoided loss and crosstalk in long-distance lines.

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2022-06-12 05:30:19 When it comes to metallurgy, it is common knowledge that smaller grains make for harder metals. But how exactly do you achieve these grains?
A group of Brown University researchers has found a method for smashing individual metal nanoclusters that leads to metals that are up to four times harder than naturally occurring structures. This new method is quite different from conventional hardening techniques.

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2022-06-11 22:01:48 If you've been paying attention lately, you've probably heard about the Denis Villeneuve adaptation of Frank Herbert's Dune, which is set to open in the US on October 22.
The film, like the book before it, is almost entirely set on the desert planet Arrakis, which is in a remote, inhospitable part of a sprawling, universe-spanning human empire.
An otherwise unremarkable planet, Arrakis is home to gigantic sandworms who excrete a substance known as the spice melange that makes faster than light travel possible, along with several physiological benefits like prolonged lifespan and parapsychological abilities like prophecy.

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2022-06-11 18:01:09 How to Make a Welding Positioner Turntable Using a Car Rim

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2022-06-11 13:00:46 Supersonic planes might be speedy but they have one distinct problem: They generate an unbearably loud sound. When an aircraft travels faster than the speed of sound, shockwaves form and travel away from the aircraft, merging and generating sonic booms heard on the ground for miles.
NASA is now working with Lockheed Martin Skunk Works to transform aviation through its faster-than-sound X-59 Quiet SuperSonic Technology (QueSST) aircraft that reduces sonic booms to a barely-audible sonic thump.

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2022-06-10 22:02:11 SpearUAV, an Israel-based defense manufacturer, has unveiled a quadcopter drone, Ninox 103 UW UAS, that can be launched by a submarine without having to arrive at the surface.
Founded by air force veterans with years of flying experience, Spear UAV is a supplier for several projects to Israel’s Ministry of Defense, the company claims on its website. The company has a range of unmanned aerial vehicles (UAVs) in its Ninox product line ranging from grenade-launched drones to those that can be launched from tanks and mobile fighting vehicles.

SpearUAV also has wearable and autonomous loitering munition for the unmounted soldier. So, a drone that can be launched from a submerged platform seems like the next logical thing to make.

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