Bueno… esta entrada la hago porque el otro día en una de las pruebas de clase había una pregunta que era
¿Se ale jaría de la Tierra nuestra Luna provocando una explosión en su cara oculta?
Y, además, el otro día volví a ver la película de la “M áq u i n a del tiempo” en la que querían construir en la Luna un complejo turístico bajo la superficie lunar por lo que provocaban explosiones de 20 megatones there, the result being that the moon had deviated from its orbit, split in half and that one piece was a stop on Earth.
Given that misses a class a few days and virtually no physical I have no idea, I researched a bit:
With these megatons is impossible to split in half moon. And, in the event that we managed to power enough to make explosions of the magnitude that is needed so that the moon split in half would need to detonate on or near the center. To get there would have to make a good dig ... And if it cost them the asteroid would hit Earth in the movie Armageddon, here would cost even more.
Anyway, that does not cause a piece of the moon impacts on Earth, at best displace some orbit.
A Laser or Light Amplification by Stimulated Emission of Radiation is a device that uses a quantum mechanical effect (induced emission or stimulated) to generate a coherent beam of a suitable medium and the size, shape and purity control. Can also be extended in December has infrared radiation regions, visible and ultraviolet.
lasers contain a laser medium (amplifier), a pumping mechanism and a feedback system. Emit photons in a beam narrow and well defined. That light is almost monochromatic (consisting of a single wavelength -color-), is very consistent, and often polarized.
There are four processes basic occurring in laser generation, are called: pumping, spontaneous emission of radiation, stimulated emission of radiation and absorption.
pumping. Raised by a radiation source or the passage of electric current, the excitation of the active species, ie electrons spend part of their ground state (low energy) at different energy states higher. These electrons will be little time in these states, and consigned to a metastable intermediate state where they remain a relatively long time (in milliseconds).
spontaneous emission of radiation. The electron is returning to the State based to emit a photon is a random process and radiation have different directions and phases, so that monochromatic radiation is generated inconsistently.
stimulated emission of radiation. The photons generated in the previous process collide with excited species, which causes suffering a relaxation by emitting a photon of the same energy that stimulated the process. In this case, realization of coherent monochromatic radiation.
absorption. a photon is absorbed, an electron from the metastable state. Compi you with the above process.
In Star Wars or other movies / series like Star Trek ... lasers are different colors. To really cause much effect would be transparent as they would have the most energy. It would be impossible to see when struggling with them, as well as when traveling at the speed of light photons would be impossible to see the rays of colors also because it would be a continuum between the edge of the laser and the target.
If they are, mean that its light is scattered. A ar ma with such dispersion would be very efe ctive. The only way to make visible the beam is to pass it through smoke or steam to disperse the beam and would cause it saw the light.
Nor should hear the ships that fire so I commented on in tr ada above, to be in space
Is a lightsaber actually a laser beam?
In a film of the saga sees som throw words, if a beam of light fuesenrealmente would not. Neither a laser to another laser stop (mythical scenes as duels). And how would control the length of the laser?
So instead of a laser, it would seem more plasma. Understanding plasma or No gas consisting of charged particles (ions) and whose dynamics presents free collective effects dominated by long-range electromagnetic interactions between them.
any phenomenon that involves the propagation of elastic waves in a nearly audible or inaudible, usually through a fluid (or other elastic medium) that generate vibration of a body. The sound is humanly audible sound waves consist of oscillations of air pressure, which are converted into mechanical waves in the human ear and perceived by the brain. This spread is similar in fluids, where the sound takes the form of pressure fluctuations. In the solid sound propagation involves variations of the stress state of the environment.
Sound propagation involves transport of energy without mass transfer, in the form of mechanical waves that propagate through the solid, liquid or gaseous. As the vibrations produced in the same direction in which the sound propagates, it is a longitudinal wave.
In the space could not hear sounds because of the absence of a material medium to propagate the sound as it traveled through the vibration of atoms and molecules in half and there is no air space, has no way travel. is a failure who have a lot of movies because they heard an explosion that occurs in space, which should not happen.
- How is the severity artificial for astronauts on Earth are as : The force of gravity is the attraction between masses. In order to generate a gravitational field must have mass.
With equivalence principle can be generated artificially maintaining a constant gravity acceleration on the spacecraft (requires a large consumption of fuel).
Another way to achieve a similar result would be through a rotational movement. The rotation of a body generates a centrifugal acceleration, which would make sintiésemos in our body an acceleration similar to that of the earth, which would push us to fall out of rotating body.
In the movie "2001. Space Odyssey based on the novel by Arthur Clarke , use this form of rotation to create artificial gravity.
Still, there are differences between the Earth's natural gravity and artificial gravity in a rotating system.
In the movies we see that the astronauts moving in a very slow . The explanation is as follows:
With the principle of action and reaction of Newton's Third Law. The astronaut's body found in house air (a fluid) and has to exert a force to move the hand to move the air particles. Your body has to suffer the same strength but opposite direction. If you move fast, the body will also move with these movements.
When moving in places where there is an absence of gravity and have no place to lean / pulse can also be moved by moving the arms, but it was not very fast.
jaría de la Tierra nuestra Luna provocando una explosión en su cara oculta?
n a del tiempo” en la que querían construir en la Luna un complejo turístico bajo la superficie lunar por lo que provocaban explosiones de 20 megatones there, the result being that the moon had deviated from its orbit, split in half and that one piece was a stop on Earth.
