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Rocket ships

The number of electrons in the outer shell of each atom determines most of an element s chemical properties. Since the outer shell is not changing, many transition elements are similar to one another. They are all metals. Some are the familiar metals of cars and coins and rocket ships. Others are rare and seldom used. This large group contains over half the total number of elements. [Pg.41]

Figure 18. Two rocket ships are at rest. Then one ship, the Traveler, starts its rockets and travels at the speed of 0.1c to a star one lightyear away, turns, and comes back. During the travel both ships produce flashes at exactly one flash per second. The traveler (the Traveler s captain) counts the flashes from the other ship, the Rester, and finds the frequency to be lower during the first 10 years and higher during the other 10. However, the captain of the other ship, the Rester, finds the Traveler s flash frequency to be lower during 11 years and higher during only 9 years. They have counted different numbers of flashes, as if the Traveler s time went slower. Figure 18. Two rocket ships are at rest. Then one ship, the Traveler, starts its rockets and travels at the speed of 0.1c to a star one lightyear away, turns, and comes back. During the travel both ships produce flashes at exactly one flash per second. The traveler (the Traveler s captain) counts the flashes from the other ship, the Rester, and finds the frequency to be lower during the first 10 years and higher during the other 10. However, the captain of the other ship, the Rester, finds the Traveler s flash frequency to be lower during 11 years and higher during only 9 years. They have counted different numbers of flashes, as if the Traveler s time went slower.
Shoes might be all we need to get to Rome from Milan. But we will need more than shoes to get to Rome from Sicily we will need a boat. And to get to Rome from Mars, we need very high-tech equipment indeed. To make AMP from the ingredients that the cell uses we also need very high-tech equipment the enzymes that catalyze the reactions of the pathway. In the absence of the enzymes, AMP is simply not made by the reactions shown in Figure 7-1. The point is that even if adenine or AMP can be made by simple pathways, those pathways are no more precursors to the biological route of synthesis than shoes are precursors to rocket ships. [Pg.150]

For a simple-artificial object such as a steel rod, the context is often important in concluding design. If you saw the rod outside a steel plant, you would infer design. Suppose however, that you traveled in a rocket ship to a barren alien planet that had never been explored. If you saw dozens of cylindrical steel rods lying on the side of a volcano, you would need more information before you could be sure that alien geological... [Pg.195]

Francis Crick also thinks that life on earth may have begun when aliens from another planet sent a rocket ship containing spores to seed the earth. This is no idle thought Crick first proposed it with chemist Leslie Orgel in 1973 in an article entitled Directed Panspermia in a professional science journal called Icarus. A decade later Crick wrote a book, Life Itself, reiterating the theory in a 1992 interview in Scientific American on the eve of the publication of his latest book, Crick reaffirmed that he thinks the theory is reasonable. [Pg.248]

A close chemical relative of DMT is 5-MeO-DMT. It gives an equally powerful rush when smoked, but instead of visual hallucinations, the smoker experiences complete dissolution of reality. Some users describe this trip as rocket ship into the void." These two tryptamines usually occur together in the plant sources of South American snuffs, but although synthetic 5-MeO-DMT has been readily available in North America, it has far fewer fans than its chemical cousin. The reason is that S-MeO-DMT is often more frightening than delightful. [Pg.103]

As the rocket ship, guided by superfast superconducting computers, each the size of a sugar cube, shoots out of the range of earth s gravity, Electric Man presses a button in the arm of his easy chair. The chair lifts a few inches off the floor and then, responding to the touch of another... [Pg.234]

Spacecraft and space travel sectors have several companies actively manufacturing rocket ships, spacecraft, and navigational systems. The British company Viigin Galactic and the American company Space Adventures operate spacecraft, and private citizens can book flights, although it is extremely expensive. [Pg.166]

The bulk of the adventure stories took a far more serious approach. In Strange Adventures 50 Quly 1955) a visitor from outer space— Radium Man—steals a massive amount of American radium but has to leave it behind because it affected the space-drive mechanism of his rocket ship. In Showcase 23 (1960), Green Lantern stops an invisible villain from detonating an atomic bomb. Four years later, the Flash (May 1964) drew on his super speed to keep a nuclear bomb from obliterating a city. In 1965, Superman s hands became coated with invisible chemicals so that one clap would trigger an atomic explosion. In Adventure Comics 442 (December 1975), Aquaman barely stopped a... [Pg.122]

Titanium alloys are widely applied in aviation, rocket engineering and ship building due to their high strength, corrosion resistance and the small specific weight. [Pg.425]

A Small but important daSS of fOi mUlatiOnS comprises the Composite Solid Rocket Propellants. Composites typically contain a major amount of an oxidizer such as AP or HMX, a metal powder such as Al, a binder which is one or another type of rubber (or double-base), and up to a dozen trace ingredients such as catalysts, stabilizers, etc. There are literally hundreds of formulations, all to a degree similar and the choice comes down to specific missions, economics, and special requirements Loading of End Items. The blends and formulations described above may be loaded into their hardware in the plant where they are made, or they may be shipped to another plant for Load/... [Pg.796]

PVC plastisol proplnts are employed in sounding rockets, jets, aircraft, control motors, tactical weapons and ship models. However, they are not case-bondable (Ref 10)... [Pg.832]

Each rocket in its shipping and firing tube is manually removed from its storage pallet in the UPA and transferred to a metering device to ensure that it is oriented with the warhead assembly heading first into the explosion containment vestibule (ECV). The metering... [Pg.57]

Explosive Catapults are devices used for launching naval shipboard airplanes. Due to the lack of space aboard ships, it is impossible to have long enough runways to properly launch planes by ordinary means. Therefore, a catapult is used to impart sufficient initial velocity to the plane to launch it properly. Formerly, such catapults were operated by compressed air, but now expls are used. One method for launching planes is to fasten on the under side of the wings of a plane some rockets and then fire them at take-off time. This is now known as RATO (rocket-assisted take-off), but was formerly known as JATO (jet-assisted take-off)... [Pg.271]


See other pages where Rocket ships is mentioned: [Pg.139]    [Pg.222]    [Pg.308]    [Pg.249]    [Pg.92]    [Pg.489]    [Pg.308]    [Pg.27]    [Pg.526]    [Pg.16]    [Pg.17]    [Pg.19]    [Pg.38]    [Pg.38]    [Pg.189]    [Pg.139]    [Pg.222]    [Pg.308]    [Pg.249]    [Pg.92]    [Pg.489]    [Pg.308]    [Pg.27]    [Pg.526]    [Pg.16]    [Pg.17]    [Pg.19]    [Pg.38]    [Pg.38]    [Pg.189]    [Pg.1]    [Pg.466]    [Pg.40]    [Pg.46]    [Pg.966]    [Pg.182]    [Pg.181]    [Pg.188]    [Pg.105]    [Pg.57]    [Pg.78]    [Pg.87]    [Pg.96]    [Pg.96]    [Pg.97]    [Pg.137]    [Pg.193]    [Pg.217]    [Pg.68]    [Pg.821]    [Pg.72]   
See also in sourсe #XX -- [ Pg.526 ]




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