aThere were frequent explosions and unintended fires. 有频繁爆炸和不愿意的火。[translate] abecome addicted to cigarettes 变得上瘾对香烟[translate] aDMJ The Resurrection DMJ复活[translate] awithin each equivalency class were strongly correlated, while metrics from different equivalency[translate] ...
Crumbling rocks, gas leaks, dust explosions, chemical byproducts, and underground environments challenge even the best equipment and miners. By using Uncrewed Aerial Vehicles (UAVs) in mining, surveyors reduce these risks by removing humans from the inspection process. Remote monitoring improves on-sit...
When the engines shut off, the nitrogen goes from the valves into the fuel lines momentarily to flush the lines of any remaining fuel and oxidizer; this purge of the line prevents any unwanted explosions. During a single flight, there is enough nitrogen to open the valves and purge the ...
“Shcherbina called me on Saturday evening,” recalled Ryzhkov, “and reported on the situation. ‘We’ve measured the radiation… Prypiat has to be evacuated. Immediately. The station is close by, and it’s emitting radioactive contagion. And people in the city are living it up full blast...
The standard model of cosmology assumes that our Universe began 14 Gyrs (billion years) ago from a singular Big Bang creation. This can explain a vast range of different astrophysical data from a handful of free cosmological parameters. However, we have
Shutter speeds are usually measured in fractions of a second and typically range from one full second to 1/1000th of a second. The longer the shutter remains open, the more light is allowed onto the film. So how do these factors affect high-speed photography? To learn how high-speed ...
These are contrasted with everyday (unmeasured) containers: Because she brought stone jugs and not sealed quarts. Measuring is also behind the word pint, which comes from the Latin word pincta, meaning “painted,” from the use of a painted mark on a container that showed its capacity. ...
transition probabilities and branching ratios as well as cross sections of a variety of nuclear – mainly neutron- and charged-particle-induced – reactions of these isotopes is a precondition for the evaluation of scientific data in any of these research areas. But how reliable are the presently...
Explain the difference between the tail of a meteor and the tail of a comet. What are they composed of? How are they created? How do we see them? What property of stars can be measured only by using binary-star systems? Why does chemical composition change most rapidly...
Brass was chosen as it is non-sparking (if struck, it does not produce sparks that may ignite the powder train and cause premature explosions). The fuse consisted of two different primer charges separated by two channels containing gunpowder. The connection between the two channels (and thus ...