WE’LL ALL FLOAT ON (MERCURY) An Illustration Of Just How Dense Mercury Really Is

Thanks to years of “Looney Tunes” gags, anvils are pretty much synonymous with “really heavy object.” But while iron is dense, it’s got nothing on mercury, one of the densest materials on Earth. And while this video from Cody’s Lab is from last year, it remains an extremely cool illustration of what that difference in density means.

Fred said his mother, Bernice, had been convicted of killing a neighbor and served two years in the infamous Mississippi State Penitentiary, better known as Parchman Farm. In her appeal to the state Supreme Court a few months later, Bernice’s own lawyer called the incident “an ordinary negro woman fight” and said that most of the testimonies should be discounted — except for the sole white man’s — because “a so-called solem oath, has little, if any, restraining influence on this character of witnesses.” Hiram has few records of what happened to Bernice during her time in prison.

Composite metal foam—or CMF, for short—is a material made from hollow metallic spheres that are surrounded by a matrix that can be made from various types of metals, including titanium or even alloys. The CMF material was then sandwiched between a layer of ceramic, which served as a faceplate, and a thin aluminum backplate, to create a composite panel of armor. That’s not only a significant amount of weight savings that could improve the safety, maneuverability, and fuel efficiency of armored vehicles, the CMF panels also require considerably less raw material than solid steel for approximately the same amount of protection.

However, some people like experimenting with the new world grapes and — as you might expect, some vines found their way to Europe. Phylloxera aphids have a nose with a venom tube that poisons the plant as the bug sucks out its sap from the roots. Naturally, people argue over the taste of grafted wine vs self-rooted wine, but the overwhelming volume of wine comes from grafted vines.

Her viewers include groups that rely heavily on satellites, or people who need to know about natural events that arise from space weather—farmers, for example, or members of the US military, aurora photographers, pilots, drone operators, meteorologists, ham radio operators. Solar storms can cause airlines to reroute flights away from the poles, where radiation concentrates, so a space weather report could indicate that your flight times might change. Skov’s space weather report from May 23, 2019Space Weather Woman
Soon she became the go-to person for solar questions.

The Big Bang theory, for instance — pioneered 50 years before Hawking’s lecture by the Belgian physicist and Catholic priest Georges Lemaître, who later served as president of the Vatican’s academy of sciences — rewinds the expansion of the universe back to a hot, dense bundle of energy. In 1980, the year before Hawking’s talk, the cosmologist Alan Guth realized that the Big Bang’s problems could be fixed with an add-on: an initial, exponential growth spurt known as cosmic inflation, which would have rendered the universe huge, smooth and flat before gravity had a chance to wreck it. Likewise, Hartle and Hawking expressed the wave function of the universe — which describes its likely states — as the sum of all possible ways that it might have smoothly expanded from a point.

But carbon dioxide levels rise rapidly in poorly ventilated rooms, because exhaled air is about 4 percent carbon dioxide by volume. In the lecture hall in Helsinki, the monitor showed the concentration quickly reaching 1,000 ppm — the threshold at which a room starts feeling stuffy for most people, according to the American Society of Heating, Refrigeration and Air-Conditioning Engineers. The fresh air combined with the departure of dozens of CO2-exhaling humans sent carbon dioxide levels plunging, all the way down below 600 ppm within minutes.

The state to and from which the researchers are actually looking for quantum jumps is, meanwhile, the “dark” state — because it remains hidden from direct view. That ambiguity is crucial for maintaining quantum coherence during a jump between these two states. During that silent time, the system had presumably undergone a transition to the dark state, since that’s the only thing that can prevent flipping back and forth between the ground and bright states.

A less sensitive version of this balance was also used by the NASA team when they thought their EmDrive produced thrust. When power flows to the EmDrive, the copper cone heats up and expands, which shifts its center of gravity just enough to cause the torsion balance to register force that can be mistaken as thrust. Over the course of 55 experiments, Tajmar and his colleagues registered an average of 3.4 micro-Newtons of force from the EmDrive, which was very similar to what the NASA team found.

At elementary school, he was known as “the Mayor” for the way he would enthusiastically greet anyone and everyone walking past him, his mother, Terry, tells me. And at social gatherings, he would compulsively compliment everyone on their appearance. Williams syndrome affects about one person in 10,000, and some who have it are so impulsively affectionate, and so devoid of our typical social inhibitions, that they will hug complete strangers on the street, says Jocelyn Krebs, the president of the Williams Syndrome Association (WSA) and the mother of a boy with the condition.