Can sound energy and light energy pass through opaque objects?
97822
i think sound energy can pass through a medium so should pass through opaque object. light energy is not transmitted through opaque objects only transparent objects so it will be reflected at the boundary. Degree of reflection would depend on the opaqueness of the object
102078
Yes there is sound. Don't confuse sound with 'hearing'. The speed of sound is given in ft/sec, varying with what it moves through.. There is no factor there for 'hearing'. If you turn on a flashlight at night and a beam is created, but there is no one there to 'see' it, light is still emitted; the beam is certainly there. It's the same for sound. Sound is a compresson/rarifraction wave moving through a medium. The wave is there, detected or not. Or take the case of radio electromagnetic waves. The wave is certainly propagated, even if no radios are turned on.
825837
yes......\nlight can travel with or without a medium... water is a medium.... can be considered a transparent material..... so light can pass through water... in other mediums, liike opaque and translucent, light may either be absorbed or half absorbed and half transmitted...
171535
a translucent material reflects some of the light that hits it\n\nWhen light strikes a translucent material, it enters the body of the object, scatters and re-emerges from the surface\n\nIf an object is translucent, it will allow some of the light to come through, but most of the light is scattered
632899
No, it uses sound waves to form a visualisation of matter.  It hurts noone.  Best wishes
312834
A shadow is a patch which has a lower intensity of light as compared to its surroundings.\nSo when light cannot go through an opaque object there has to be a lower/nill intensity of light behind the object, thus a shadow is formed.\nAnd as far as the light hitting the opaque object is concerned, it is reflected and/or absorbed to be converted to heat energy.
712051
Light waves are in the visual spectrum and so they bounce off of solid objects.. Radio waves like X rays are in a non visual spectrum and penetrate.
595019
Theoretically, as it is said in the article, it is possible.\n \nLet me explain how we can "see", our eyes have the ability to recognize objects through light. And light, as you already well know I assume, is composed of 7 colors:\nRed\nOrange\nYellow\nGreen\nBlue\nIndigo\nViolet\nIt is known as the ROYGBIV or the spectrum. When light strikes through an object, in this case we will set an example of a blue object, all the other colors are absorbed by the object except for the color blue causing it to strike away to that object. And then it enters our eyes and our brain will interpret is as such.\n\nNow if all of the colors are absorbed, then no light will enter and we see it as black. If all colors are strikes away towards our eyes then wee see it as white. \n\nIt is said in the article that they are gonna use gadgets that will steer light and other forms of electromagnetic radiation AROUND the "cloak" and not to bounce back to our eyes causing it not to have any color at all, not even black nor white. What is that? It is indeed invisible.
115074
No...there needs to be a medium for sound to travel through, considering the Big Bang was the beginning, there would be no 'ether' for any sound waves. Just as we cannot hear any of the large energy bursts from the sun which occur everyday.
279774
Light and sound both travel through waves, though light travels fatser than sound. Light does not require any medium for transport, so it is called an electromagnetic wave. Sound however needs a medium as it is transmitted through the vibrations of the particles of the medium. It is called a mechanical wave.
419821
must be some kind of a transducer. it could also be a laser as i am not sure whether it is sound or light waves. i think it will use a laser and a sensor to detect the reflaction and hence how near it is to an object.
915429
We only see the light reflected off of an object.  Google the invisibility cloak that scientists have comeup with.  It works by refracting and redirecting light .
743939
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.
887711
Light IS energy...sorry I can only think of one...:(
575076
Tricky....\nI assume that it will be impossible to see the light inside the ball. When you "see" things is because the light bounces on the surface of objects into your eyes... As the light in this hypothetical ball cannot get out of the ball and towards your eyes, you'll see just a dark shiny ball... (i guess)
45176
it allows some light to pass through it, or "conducts" light...it DOES NOT DIFFUSE LIGHT by definition.  a perfectly clear window is translucent, and so is a stained glass window. is not the same a transparent though, because it does not necessarily allow all frequencies of light through,
49280
You don't bend sound with EM.  If you wanted to have no sound around you, you'd have to be in a vacuum--otherwise the sound would still be able to propagate through the matter that connected you to the sound medium.\n\nAs for bending light, the probalem is there would need to be a different filed requirement for every wavelength of light you wanted to bend away, and you could never bend them all away.  If you only wanted to bend away the visible spectrum, an easier way would be with a solid opaque material.