More generally we can say: By the time the capsule volume has been reduced by half, then half of all the work that is done on the capsule has been completed assuming constant ablation pressure. Another way to look at it is that as the capsule implodes, its surface area shrinks. Since the pressure which is the force per unit area is constant, the total force, and the ability to do work, on the capsule shrinks also with decreasing radius. We should observe that the ablation process soaks up a lot of energy. A simplistic computation of the work done in imploding a 10 liter secondary in the “W “, assuming constant ablation pressure, shows that 6. This is more energy than we assumed that the primary actually produced 5 kt , and also ignores the limits of rocket efficiency. Clearly as implosion proceeds the available energy in the channel decreases, as does the ablation pressure.
Controlled Nuclear Fusion
Many believe love is a sensation that magically generates when Mr. No wonder so many people are single. A few years ago, I spoke to a group of high-schoolers about the Jewish idea of love.
In a comprehensive review article, Dohnanyi [ , Icarus
Moon Dust and the Age of the Solar System Answers in Genesis , the leading young-earth creationist ministry, disowns cosmic dust arguments. The most amazing thing about the cosmic dust argument is that it is still being used! It has coasted along on obsolete evidence, and nothing but obsolete evidence, for the last 25 years!! It nicely illustrates how creationists borrow from each other and never do any outside reading.
The obsolescence of this argument has been brought out in numerous debates and published in countless books, journals, and newsletters. It can be discovered by anyone who exercises his or her library card. It’s not a state secret! What does it take to get through to the creationist brain?? The earliest use of the cosmic dust argument that Van Till Van Till et al, could find was in an article by Harold Slusher, which was published in the June issue of Creation Research Society Quarterly.
Slusher made several blunders which are handed down in the “scientific” creationist literature to this very day. In the cosmic dust argument received its big kick-off from Henry Morris’ book, Scientific Creationism.
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The Sun-flag Hi-no-Maru consists of a red circle on a white background. The metric system is the legal standard. The total area of Japan is , sq km , sq mi. Comparatively, the area occupied by Japan is slightly smaller than the state of California. It extends 3, km 1, mi ne—sw and 1, km 1, mi se—nw and has a total coastline of 29, km 18, mi.
Sweden seems to be the place to go for fossil meteorites!
There are also huge advantages if this can be achieved. Scientists and engineers have been working on controlled fusion for about 60 years. Unfortunately it has proved so far to be frustratingly difficult to achieve the conditions needed, and there is as yet no silver bullet. There is a standing joke that fusion is always 30 years away and always will be.
The simplest reaction to achieve on earth is the fusion of deuterium and tritium. There are two main ways that the plasma can lose energy. This heat is extracted from the neutrons by surrounding the taget with a blanket of water. Lithium is also needed to breed more tritium fuel. The heat absorbed by the water coolers then drives turbines to produce power.
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Since the reaction rate increases with temperature, feed-back is established that causes the power output of the secondary to rises steeply.
Interactions of an object with another object can be explained and predicted using the concept of forces, which can cause a change in motion of one or both of the interacting objects. An individual force acts on one particular object and is described by its strength and direction. The strengths of forces can be measured and their values compared. What happens when a force is applied to an object depends not only on that force but also on all the other forces acting on that object.
A static object typically has multiple forces acting on it, but they sum to zero. If the total vector sum force on an object is not zero, however, its motion will change. Sometimes forces on an object can also change its shape or orientation. But at speeds close to the speed of light, the second law is not applicable without modification.
Nor does it apply to objects at the molecular, atomic, and subatomic scales, or to an object whose mass is changing at the same time as its speed.
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This is fundamentally the same general idea of modulated energy release just described, using a different mechanism.
How Good Are Those Young-Earth Arguments?
Gravitational interactions are nonnegligible, however, when very massive objects are involved.