We've got this interaction between the two and this is something that drives that strange physics that I mentioned earlier, the fact that we've got two fluids, one's on top of the other and they don't really want to be there. They want to swap positions, swap places. Part of what we've learnt from our experiments is that you need to understand what's going in the fireball in order to understand the loading that's developed on the target because that chemical composition feeds into what the loading becomes.
Is that possible now? And what we end up doing is providing the crucial validation data for people like the guys at MoD, DSTL, where they are looking at modelling these kind of situations and we're able to provide them for the first time with these very close and detailed experimental results that allows them to validate their models.
That system that they've developed is fantastic because it allows us to do something that nobody has ever done before. There's nobody else in the world who is able to look at the point on a on a flat plate and say the pressure being exerted there is megapascals and that pressure wave is lasting for three milliseconds. So being able to have that information makes the rest of the process of designing protected military vehicles much, much easier.
And thanks to the work that the university has been doing, we are better able to do that. And there are more people coming home with fewer injuries than they would have been otherwise. Characterisation of buried blast loading. Measuring spatial pressure distribution from explosives buried in dry Leighton Buzzard sand.
A large scale experimental approach to the measurement of spatially and temporally localised loading from the detonation of shallow-buried explosives. Predicting the role of geotechnical parameters on the output from shallow buried explosives.
Coronavirus Covid : latest advice. You are here Home Research Research features What happens when a bomb explodes? A blast bomb was thrown but the device failed to explode.
The jet smashed into a hillside and exploded. My heart was nearly exploding in fright. Questions about grammar and vocabulary? Join us Join our community to access the latest language learning and assessment tips from Oxford University Press! Want to learn more? Those bubbles, like the ones in your Bubble Bomb, are created by the chemical reaction of an acid and a base.
Take a look at a recipe for quick bread. If the recipe includes baking soda but no baking powder, it will probably also include an ingredient that's acidic-such as buttermilk, sour milk, or orange juice.
Quick-bread recipes may call for baking powder in addition to or instead of baking soda. Baking powder is made by combining baking soda with an acidic ingredient, such as tartaric acid or calcium acid phosphate. When you add water to baking powder, it will fizz as the acid and base interact.
In fact, if you ever run out of baking powder, you can make your own by mixing two teaspoons cream of tartar it provides the acid , one teaspoon of baking soda it's the base , and a half-teaspoon of salt. Any baked goods that rise rely on carbon dioxide bubbles to get the job done. You can make these bubbles either by using yeast or by using the acid-base reaction like you did in the experiment.
Yeast is a one-celled fungus which converts sugar to carbon dioxide gas. Because this process takes a while, bakers use yeast in doughs that they leave alone for several hours. Another method that cooks use to make something rise is a combination of baking soda and an acidic ingredient, like orange juice or buttermilk.
This is the same kind of chemical reaction that took place in your bubble bomb. If one white dwarf collides with another or pulls too much matter from its nearby star, the white dwarf can explode. In this illustration, a white dwarf pulls matter from a companion star. Eventually, this will cause the white dwarf to explode.
Image credit: STScI. These spectacular events can be so bright that they outshine their entire galaxies for a few days or even months. They can be seen across the universe. Not very. Astronomers believe that about two or three supernovas occur each century in galaxies like our own Milky Way. Because the universe contains so many galaxies, astronomers observe a few hundred supernovas per year outside our galaxy.
Space dust blocks our view of most of the supernovas within the Milky Way. Scientists have learned a lot about the universe by studying supernovas. They use the second type of supernova the kind involving white dwarfs like a ruler, to measure distances in space.
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