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“Whenever we have developed better clocks, we’ve learned something new about the world,” said Alexander Smith, an assistant professor of physics at Saint Anselm College and adjunct assistant professor at Dartmouth College, who led the research as a junior fellow in Dartmouth’s Society of Fellows. “Quantum time dilation is a consequence of both quantum mechanics and Einstein’s relativity, and thus offers a new possibility to test fundamental physics at their intersection.”

A phenomenon of quantum mechanics known as superposition can impact timekeeping in high-precision clocks, according to a theoretical study from Dartmouth College, Saint Anselm College and Santa Clara University.

Research describing the effect shows that superposition — the ability of an atom to exist in more than one state at the same time — leads to a correction in atomic clocks known as “quantum time dilation.”

The research, published today (October 23, 2020) in the journal Nature Communications, takes into account quantum effects beyond Albert Einstein’s theory of relativity to make a new prediction about the nature of time.

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See ya later 👋! The nest was the first discovered in the U.S.

Crews with the WSDA Pest Program vacuumed the hornets from the tree cavity into large canisters Saturday. The nest was about the size of a basketball and contained an estimated 100 to 200 hornets.

The specimens will be used for research purposes, said Sven Spichiger, an entomologist with WSDA, during a press conference Friday afternoon.

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Many people say that overpopulation will spell the end of humanity. However, with mind uploading and the consumption of fewer resources that comes with it, I believe that humanity will not have to worry about an overpopulation issue for decades to come.

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If you own a perfectly fine conventional automobile but want to join the EV revolution, you have two choices. Engineer an electric drivetrain swap yourself, which involves hours and hours of lying on you back on a creeper in your garage, or buying a new electric car. Now, if you live in France, there’s a third way. Transition One will take your current car, remove the existing internal combustion engine, replace it with batteries and an electric motor, and give it back to you in about 4 hours.

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Albert Einstein’s twin paradox is one of the most famous thought experiments in physics. It postulates that if you send one of two twins on a return trip to a star at near light speed, they will be younger than their identical sibling when they return home. The age difference is a consequence of something called time dilation, which is described by Einstein’s special theory of relativity: the faster you travel, the slower time appears to pass.

But what if we introduce quantum theory into the problem? Physicists Alexander Smith of Saint Anselm College and Dartmouth College and Mehdi Ahmadi of Santa Clara University tackle this idea in a study published today in the journal Nature Communications. The scientists imagine measuring a quantum atomic clock experiencing two different times while it is placed in superposition—a quirk of quantum mechanics in which something appears to exist in two places at once. “We know from Einstein’s special theory of relativity that when a clock moves relative to another clock, the time shown on it slows down,” Smith says. “But quantum mechanics allows you to start thinking about what happens if this clock were to move in a superposition of two different speeds.”

Physicists describe a way to merge quantum theory with Einstein’s special theory of relativity—and even a method to test it experimentally.

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Boston Dynamics announced that it has developed a robot arm for its “Spot” robot and also a charging station. Both will be available for purchase this spring.

The robot Spot made quite a splash on the internet last year, thanks to its YouTube videos. The four-legged yellow-bodied robot was shown marching its way autonomously and untethered through a wide variety of terrain in ways reminiscent of a dog; hence its name. The robot dog is available for sale. Those interested can purchase one directly from Boston Dynamics for $75,000. CEO Rob Playter told members of the press recently that the company has sold 260 of the robots as of last June. Those robots are currently being tested (and in some cases, used) in mining, healthcare, construction and other sectors—mostly in situations that are dangerous for people. The company has also created a host of add-ons for the robot to assist in a wide variety of applications. The company is now adding to that list by making available both a robot arm and a charging station.

The robot arm affixes to the top front of Spot, resembling a with an articulated joint. A gripper is mounted on the end of the arm, vaguely reminiscent of a head with a mouth. The is capable of six degrees of motion and comes with its own user interface (UI). The arm can be programmed ahead of time to carry out tasks, such as using doorknobs, turning hand cranks, or lifting, carrying and moving materials. Alternatively, the arm can be controlled by a user watching the action. The arm is programmable via an associated developer API toolkit.

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WASHINGTON — SpaceX launched another set of Starlink satellites Oct. 24, marking the 100th time the company has placed payloads into orbit.

The Falcon 9 rocket lifted off from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:31 a.m. Eastern. The rocket’s upper stage deployed the payload of 60 Starlink satellites into orbit 63 minutes after liftoff. The first stage, making its third flight, landed on a droneship in the Atlantic Ocean.

This was the 100th successful launch in the company’s history. That total includes 95 Falcon 9, three Falcon Heavy and two Falcon 1 launches. The company also suffered three Falcon 1 launch failures and one Falcon 9 launch failure; another Falcon 9 was destroyed in 2016 during preparations for a static-fire test.

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