in simple term, how does an x-ray work? I know itz radioactive something but how? Does e waves go through your body and e x-ray takes a snap of it..?
200877
X-rays are transmitted through a subject onto a photographic film. The x-rays are blocked by bone and other solid objects casting a shadow onto the film.
113750
An induction coil liberates only very high voltages- high voltage electricty does not in itself stimulate the emission of any type of radiation. Hoever if you use that high voltage to produce beams of high energy electrons you can start doing damage- A simple x ray generator would consist of a high voltage supply which would accelerate electrons to a high velocity- this electron beam would be further focused by secondary electromagnets and strike a metal target, x rays will be produced at the target as a result of the high velocity electrons striking the target.\nThis is all pretty simple stuff and can be done (with some skill in a home laboratory) My advice however is DONT- you will probably fry yourself!!
315770
From the point of view of Physics, an electromagnetic (EM) wave is a self propagating wave in space with electric and magnetic components. It carries energy and momentum which may be imparted when it interacts with matter. EM wave can be predicted by Maxwell's equations. \n\nFurther informations: http://en.wikipedia.org/wiki/Electromagnetic_wave
520516
Physics is involved in all types of diagnostic imaging: xrays, MRI, CT scans, PET. Look them up and do your own homework.
387100
It's a lie, it's like cell phones causing gas stations to blow up. I work for a package delievery service and we ship optic mice, cell phones and what not all the time, and if something edmits radioactivity it's required to be labeled, even if it doesn't emit the radiation when it's turned off. the only thing you have in ur home that is slightly radioactive is ur smoke detectors.which are class 1, meaning as long as u dont eat them you'll be fine
376791
The high energy waves do cause injury to our body. Bu consider the good side. Ultraviolet is used in fluorescent lights, it kills germs Xrays are needed for broken bones.\n\nEven shorter are cosmic raysf rom outer space and cause genetic changes.mutations.
665974
good grief - there is a lot of 'part' knowledge here...\n\nyou need to break this down and talk about the different parts of what the original question was asking.\n\nif it was 'see', the explanation would be the same as for hearing by the way. (it would be easier to explain about seeing)\n\nhere goes...\n\ninside your ear you have these little hairs (cillia) that are a certain distance apart. when a sound wave enters the ear the wavelength of this wave will stimulate hairs at both its high energy points (its troughs or peaks, you choose, not important) your brain knows the distance of the hairs and so can interprut this wave distance between two lots of hairs being stimulated. thats how you get the frequency (number of wavelengths in a second) of sound in your ear. the volume (loudness) depends on how vigourously the hairs are moved by the sound wave. (thats why you can go deaf listening to loud music - you kill those little hairs if too loud). \n\nnotice i said sound!\n\nyour question is about electromagnetic waves. radio waves and visible light (green) waves are both of the same stuff (light energy - some we can see and some we cannot). the organ for detecting this energy is the eye. inside the eye, the retina (back of the eye) has special cells called rods and cones for detecting different wavelengths (i believe this is what your engineer was on about). each of these cells has a specific chemical for detecting a certain wavelength. lets pick on one.\n\nthe red light cone has a protein inside that has a special part that can move to a slightly higher energy form (a more awkward position for the proten so it wants to get back to where it was before - think of bending a ruler... the more you bend it, the more it wants to get back to where it was... so the higher the energy it has) when red light is shone on that protein (inside the eye) it provides enough energy to move this extra part of the protein (called an apoprotein portion is anyone wants to know) to a higher energy state and this is enough to induce (make happen) a signal being sent to the brain that says 'red light detected' and we see red light.\n\na similar thing happens to green light.\n\nin physics, when we talk of waves whether in music or lihgth or nanometers, if you have something of the same wavelength then it is detected as the same.\n\nif you have something of a different wavelngth then it is detect as different ( or in the case of the eye.. or even the ear, not detected at all, unless your are green, red or blue light)\n\nbut if you have a wavelength that is say  x2 bigger, of x3 or x6 or x2000 times bigger exactly, with no extra and no bits needed.. it has to be exact. then these also will be detected.. A BIT. we call thesse harmonics. this is a word that belongs to music.\n\never notice the way a piano has all those notes (only 8 notes and yet so many keys..?) these eight notes are repeated but in higher registers/keys, but they are still the same note.... a higher harmonic. all these wavelenths are doubled or trippled or what ever.\n\nso, because there will be a harmonic of green light in the radiowave part of the spectrum... it can theoretically be detected. so you could theoretically detect green light (with the eye) and radiowaves (theoretically with the eye)... but never with the ear :-)\n\nhappy days - now lets look at information theory! why do we always lose information and yet still maintain the integroty of the message? at what point is the message lost?
477990
put the counter closer cos alpha raysonly travel a short distance...maybe that will work?... \n\nor get something that will alter with radiation... i think there a material that changes colour when hit with radiation....\n\nOOOOOOOOOrr... get something that emits a longer range radiation ray when the alpha partiles hit it...that way u can get a good approx of the count
543079
consult doctor and have an x-ray
476949
Yes it can but only in massive doses, I wouldn't worry about just a simple xray to the chest, the doc needs to see what's happening with your lungs, if it's pneumonia or bronchitus, that's important.  If you were exposed to the xray machine a million times there would be a chance and only a small one at that, of developing cancer.  Don't worry about that, rest and get better.
189930
For more info, google NMR.... the medical communicty did not want the term nuclear used out of patient concern, so they adopted the term magnetic resonance imaging. Technically it shoud be nuclear magnetic resonance imaging... even though ionizing radiation is not present. \n\nThere are multiple magnets. The large magnet provides a static field, and smaller controlled magnets allow the specific magnetic field for a given pixel to be changed, such that cross sectional mapping can occur. In addition, the smaller magnets may also be used to stablize the field created by the larger one. \n\nThe wikipedia entry is a good one, if you want more indepth knowledge a good reference is available at\nhttp://www.cis.rit.edu/htbooks/nmr/chap-3/chap-3.htm
237835
X-rays are expensive to have done because of the x-rays themselves as well as the study of them by the radiologist.  X-rays aren't usually done just to see if you are going to grow anymore.  Certain bones in your body are getting longer and larger as you get older, until you are done growing (usually during puberty or after).  I'm guessing you're a young person wanting to know how tall you will be but it's safer just to wait it out.  X-rays are not the answer to determine how tall you will be.  They are an important tool in looking inside the body to see possible health problems but can be used in an uneffective way.
552292
Physics is an attempt to describe the physical universe. Physics is involved in all physical phenomena. Ultrasonic scanners release sound waves and monitor the sound waves which are reflected back. They work like SONAR in submarines, or in the squeaking of bats. X-rays are electromagnetic radiation, like light. In either case, if you are using either for an imaging tool, you send the signal and observe how matter (like a baby, or bone) has changed the singal. This information can allow you to make a picture of what your machine "saw."
474049
you've got x-ray's and gamma rays (more energetic than x-rays) from outer space\n\nyou've got some particles from outer space (and you've got neutrinos, though these barely interact w matter so although we're exposed to them, it's of no consequence)\n\nwithin the electromagnetic spectrum, we're exposed to radio waves, television waves, mobile phone signals, electro-magnectic waves from alternating current in wires in our homes / offices, and to visible light (but you said not to count the sun)\n\nthen we're exposed to various forms of radioactivity (x-rays, gamma rays, electrons, alpha particles) from various radioactive isotopes found in nature. One common one, especially in mountainous regions, is radon, a gas.\n\n\nI realise this is more than 2 sentences but I wanted to give you enough material to chose from! ;-)
374738
Radio waves, radar, lasers, visible light, infrared and ultraviolet light, microwaves, X-rays and gamma rays, all travel as mass-less tiny packets of energy (photons) at the speed of light.  They can all easily pass through a perfect vacuum (as could a bullet!).  In fact photons interact with the electrons orbiting atoms and molecules and can be absorbed kicking the electrons into higher more energetic orbits or entirely out of the atoms during ionization.  When electrons return to their normal (rest) orbits in one or more steps they give up their excess energy in the form of fresh photons.  When a substance absorbs the energy of photons it will heat up and when the photons are released again the substance will cool.  When you hold up your palm to the sun, you can feel the warmth of the billions of photons that strike your hand which will quickly cool in the shade as it gives up more (infrared) photons than it receives.\n\nThe light that reaches your eye from a distant star is merely composed of photons of different wavelengths (colors) that have traveled through the near-perfect vacuum of space perhaps for years at the speed of light without interacting with any electrons.  In fact, clouds of gas in space could prevent the light from reaching you.
131622
Radiology is considered SCIENCE...\n\n1 : the science of radioactive substances and high-energy radiations \n2 : a branch of medicine concerned with the use of radiant energy (as X rays or ultrasound) in the diagnosis and treatment of disease
111756
Three basic concepts apply to all types of ionizing radiation. When we develop regulations or standards that limit how much radiation a person can receive in a particular situation, we consider how these concepts might affect a person's exposure.  \n\nTime \nThe amount of radiation exposure increases and decreases with the time people spend near the source of radiation. \n\nIn general, we think of the exposure time as how long a person is near radioactive material. It's easy to understand how to minimize the time for external (direct) exposure. Gamma and x-rays are the primary concern for external exposure.\n\nHowever, if radioactive material gets inside your body, you can't move away from it. You have to wait until it decays or until your body can eliminate it. When this happens, the biological half-life of the radionuclide controls the time of exposure. Biological half-life is the amount of time it takes the body to eliminate one half of the radionuclide initially present. Alpha and beta particles are the main concern for internal exposure. \n\nDistance   \nThe farther away people are from a radiation source, the less their exposure. \nHow close to a source of radiation can you be without getting a high exposure? It depends on the energy of the radiation and the size (or activity) of the source. Distance is a prime concern when dealing with gamma rays, because they can travel long distances. Alpha and beta particles don't have enough energy to travel very far. \nAs a rule, if you double the distance, you reduce the exposure by a factor of four.  Halving the distance, increases the exposure by a factor of four.\n\nThe greater the shielding around a radiation source, the smaller the exposure. \n\nShielding simply means having something that will absorb radiation between you and the source of the radiation (but using another person to absorb the radiation doesn't count as shielding). The amount of shielding required to protect against different kinds of radiation depends on how much energy they have. \n\n \n(Alpha)\n\n A thin piece of light material, such as paper, or even the dead cells in the outer layer of human skin provides adequate shielding because alpha particles can't penetrate it. However, living tissue inside body, offers no protection against inhaled or ingested alpha emitters.\n    \n \n(Beta)\n\n Additional covering, for example heavy clothing, is necessary to protect against beta-emitters. Some beta particles can penetrate and burn the skin.\n   \n \n(Gamma) \n Thick, dense shielding, such as lead, is necessary to protect against gamma rays. The higher the energy of the gamma ray, the thicker the lead must be. X-rays pose a similar challenge, so x-ray technicians often give patients receiving medical or dental X-rays a lead apron to cover other parts of their body. \n\nSo in short the lead or other materials absorb the radiation vs. it being absorbed by your body.