Can light pass through water? Why?
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...
979133
natural light is made up of different wavelength. differents wavelengths hit the grating at slightly different time. light doesnt pass through diffraction grating but its reflected from the grating to a photomultiplier because the gratings job is to divide the light in as many wavelengths as posible.
1018708
Light waves are electromagnetic energy, which can be transported across a medium. If it helps, light waves can be thought of as photons, massless particles that fly through space. No medium is required for transport.\n\nSound waves however are a disturbance OF the medium, as ocean waves are a disturbance of the water. Your eye and ear are very different in how they operate, one being capable of detecting electromagnetic energy, the other acoustic energy.
259241
Because there are no atmospheric particles for the light beams to bounce off of. You know how light bends(i.e. slows down) when traveling through water? Some light particles bounce off the water and others go through it. Its the same with the air. So that is why when you look at pictures of space you can actually see some things, because the light is bouncing off of them. The rest is void. Or mostly anyhow.
1141137
I believe transmissivity refers to how much light can pass through the diode, as in a transparent solar panel, etc.
1082336
its the way the light reflects of the bits of water
66049
Waves are the flow of energy through water.  There's quite a bit of energy in water and it can easily move as water is liquid, thus you observe a wave.  The water isn't actually moving much; each water molecule is moving just a bit and pushing the next molecule, which does the same and on it goes..
76
Water is transparent cause it was meant to be like that.
658850
you can try total internal reflection of light using a keychain laser (commonly availble) and tub filled with water. all you have to do is put a small piece of mirror in the tub filled with water, let laser fall upon it. see the trajectory of the reflected beam ofr different orintations/angle of reflections and you will find that for certain critical angle the reflected beam is trapped in the water due to the internal reflection of the laser. you can do the same thing by choosing a transparent bottle with a small hole on the curved surface close to the base. now fill it with water, and see that water flows out of the hole in a parabolic fashion, now shine the laser from the opposite side to illuminate the water column. take a white plastic sheet allow the water to fall upon it, you will find that the water emmits light. this also explains how fibre optics work.
1154689
It's not because of light relfecting off the ocean, and it's not from bending of light.\n\nIt's from selective scattering of light called Rayleigh scattering.\nAir molecules are small which makes them better at scattering small wavelengths, such as blue and violets.  As the sunlight strikes air molecule after air molecule, what reaches our eyes is the blue light that was scattered away.
741906
No. The short wave ultraviolet is blocked by glass (I'm assuming the window is not open). For the second & third parts of your question, Yes, and No. The wavelengths needed for photosynthesis do pass through glass; and wavelengths necessary for photosynthesis are absent from normal artificial light.
241831
Light can be both a particle and a wave.
1023655
well, it is a little slower in air, but not enought to effect any calculations, but it behaves this way because lightbehaves as both a wave and a particle.  The particle characteristic gets slowed down slightly by the air molecules, but the wave portion keeps chugging through the molecules, because waves need something to travel through.  Check out http://en.wikipedia.org/wiki/Speed_of_light
354495
A complex question that needs a highly simplified answer.\n\nA photon of light has different energy depending on the type of light, some light does go through us, but that ight is not visible to us.\n\nX-rays for example pass through things nicely, however they can be blocked sometimes by dense material (such as bone and metal), X-rays are a higher energy than visible light.\nEven higher energy is Gamma rays... a photon of this form of light can theoretically pass through several metres of lead, sometimes more.\n\nAt the other end of the spectrum is Infra red light, which is just outside our visibilty, when you feel it, it is heat. Consider that it can be easily insulated just by putting some sort of thick barrier between you and it.\nAlpha and beta radiation are such low energy that they are actually particles (fast travelling helium, and protons respectively). an alpha particle can be blocked by a thin piece of paper. A beta particle can be blocked by your skin.\n\nNow... visible light is between the extremes of theose above. As an experiment hold a torch to the palm of your hand and you can actually see light coming through. SO some light does get through. But most of it does not.\n\nVisible light is a happy medium with just enough energy for us to see. Any more energy or any less energy in the light and life would be difficult\n\nConside that if we could only see gamma rays then we would not see much at all, because the gamma rays would not bounce off anything.\nAt the other end, if we could only see beta particles then the world would be very dark because all the beta particles would be absorbed before they reached us.
1131143
Possibly.\n\nEven probably one day.\n\nProfessor John Pendry has done the math to show that theoretically metamaterials can be used to make light flow around objects in a similar way to water waves flowing round obstacles. Far enough away from the object, the wave flow is barely disrupted, so it cannot be seen.\n\nNow it just needs to be turned into practice.
9737
The water makes it harder for light to reach the fabric. Kind of like when you look at the ocean and the water is a dark blue the farther out you look.
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.