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waves and electromagnetic

Added Mar 06, 2018 •

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describes wave properties, sound, and electromagnetic waves to go with a set of questions

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the ocean on the shore The Sound of Music from the Sun transmission of a television program for to these things have in common they are all examples of energy being propagated by weights although we cannot see them important role in our physical world to look at the common characteristics of major differences of various ways and show how they are essential to who's in the universe pushing against the water surface as Beach Wave mousse in from offshore it is transporting the energy of that disturbance this energy is seen clearly when a stone is dropped into a pool of water what happens is that the energy of the following Stone makes a disturbance in the water as a way to radians outwards the water eventually what moves out Wordsworth away is the water it is the owner of the cervix is transported by two basic types in a transverse wave the disturbance is perpendicular to the direction of travel while in a longitudinal wave the service is parallel to its direction of travel but always have some common characteristics the wavelength is the distance of one complete wave is measured from Crest to Crest but it could be measured from any other frequency is the number of wave Cycles in a given unit of time it is usually measured as a number of words per second and expressed as a Hertz HZ opportunity is a maximum difference of the disturbance sometimes it is called the other way velocity the speed of the wave is the relationship between and the frequency is found by multiplying two together the velocity of a wave is limited by the properties of the medium through which it travels wavelength frequency amplitude and velocity are common to all waves are traveling disturbances that carry energy from place to place sound is a transfer of energy caused by vibrating material and is transmitted by longitudinal waves sometimes they're called compression weights the slinky toy what works as it was pushed out some rings of the slinky Bunch up and others are spread out of Sam this is what they look like it is created the wave of energy moves outward from the source wishing the air molecules back and forth parallel to the direction of the wave motion the molecules next to the source of the sound bar for Skyward and bumped into other molecules passing the sound vibrations on to them and so the energy of the vibrations radiant's outward when the wave arrives at the audience the molecules and The Listener interprets the vibrations as sound the sound waves appear in the energy of the music a medium can be there water or any solid material it is essential for the transmission of sound because there must be a molecule and transfer energy we should see the song waves in the air but it can be easily demonstrated that sound creates waves is vibrating at 440 cycles per second from Tipton to the water a disturbance vibrations is clearly visible the waves of energy have been transferred to the water perception of sound is shaped by the nature of the way but allow musical note is created temperature for Idaho wave is greater the louder than oil away the ways of this high pitch Note have a high frequency that it is producing far more weights per second Dennis Lopez note the hot ditch the greater the frequency of waves from 20 Hertz to 20000 Hertz in other words frequencies from 20 Waves per second to about 20,000 dogs for example thousand Hertz to 100000 Hertz the speed of sound is dependent on travels through what if there is no medium there can be no sound there is no I'm so space is there space capsules and space suits hold or so they can breathe hear sound always needs a medium to travel the temperature at room temperature the speeds for the air is 343% or 125% at freezing point soundtrack 332 meters per second or 1089 feet per second but sound travels much master window installers in the ocean 1525 meters per second for 5000 per second and in solids much faster still in Earth sound travels at 3300 use per second or 11,000 feet per second the question is why are there these differences in the speed of sound the molecules in water are much closer together than in air and its Trill their party the closer in a dense medium the sound vibrations to not have as far to travel this is called the elasticity of a medium the more elastic medium the faster the sound waves will travel seismic waves from explosions and earthquakes send open very intense longitudinal waves with huge amplitude the same as sound wave but they also transfer energy to transfer switch BC Services of energy up to seven times faster than the speed of sound in air the waves can be of such magnitude that he'll size blow-up and buildings collapse fascination of scientist for travel so fast it was very difficult to study Isaac Newton the English physicist who lived in the 17th century of extremely small articles that he could not explain how a traveled others believe that light was energy that travels in waves but they could not figure out how light waves that travel through space by that time quite a lot was and it was felt that all energy needed a medium brush to travel scientist concluded that space had to be filled with some type of matter they called either which acted as the medium for light can I 73 James Clerk Maxwell a British this resolved most of these problems Maxwell develop equations based on the earlier work of Michael Faraday who I Dennis traded the link between electric field the magnetic fields the oscillations or movements back and forth of electric charges generate electromagnetic waves of energy as transverse waves Maxwell's calculations of the velocity of these waves match the speed of light and let him to predict that light is in retro magnetic wave since electric and magnetic fields material substance these waves do not require a medium and can travel through air water for the vacuum space once that was understood this is an ocean of if we can see them Twins versus Wade would look something like the waves in this rope or the ripples on the surface of a pond this animation of an electromagnetic wave shows both note the two parts of the waves are at right angles to each other Maxwell believed that the electromagnetic waves were only but it is now known that they are waiting and particles called photons this is called the wave particle duality electromagnetic waves travel through space at the speed of light our greatest source of electromagnetic waves is the Sun but it is also the energy in radio and television waves electric lights the light emitted from fire the atoms and much more electromagnetic waves are everywhere in our universe always can be distorted deflected or changed when they come in contact with a boundary it is compared to be easy to see these effects with both water waves and sound waves but even do! distortions reflected waves change Direction when they bounce off a barrier we have all heard sound Echoes and understand oakers when someone waves are reflected on the building or no face when sound travels through air and Strikes another medium like a school wall some of the sound reflect back to us as an echo sonar uses the sink by transmitting sound waves through the water and timing The Echoes that come burn in order to create an image of the ocean floor Dolphins use sonar echolocation to for food reflection also works for other types of waves these waves of water are being reflected off the rocks mirrors reflect light and you're able to see because of the reflex electromagnetic waves when light reflects off objects those objects become visible to our eyes this pencil appears to be broken at the waterline this is due to refraction electron static waves travel faster in air than they do in water and as a result when they go from one meeting to another image appears boat because the light rake TV instruments normal Direction refraction is the uses of lens technology it also occurs with Subways and all other ways diffraction is a term used for waves spread out around the edges of objects this is why we can light waves can also be diffracted and this phenomenon was put to use in the rooms technology for beacons in my houses wow that car horn that is called the Doppler effect if the car was standing still the sound waves would travel at the same speed and the sound of the horn would have a constant pitch but as a car comes towards us each successive sound wave travels a shorter distance to reach our ears more frequently that does have a higher pitch as the car travels away from us each successive wave travels a longer distance to reach our ears and produces a lower pitch light rays also exhibit the Doppler effect in the 1920s and observe that the colors of the stars in other galaxies or similar to those in our with one exception the colors were all shifted little towards the end of the color spectrum Hubble realized that the reason for this is that the distance between other galaxies in our own priest while the light from the stars in other words the wavelengths of the right I've been stretched over a longer distance and therefore the way frequency just as it does for me this discovery of the red shift is another example of the Doppler effect that the universe is expanding object breakfast and produce waves when it is Disturbed this is called its natural frequency tree bark as rum and brought close to water the same frequency shopping for chickens to vibrate in harmony with the fruit is removed this is called resonance and always results two waves meet while traveling in the same medium wave interference occurs if the displacement in the same direction both up or both down it becomes constructive interference and the amplitude increases temporarily as they pass when Subways are nearly the same they complement each other to produce a louder sound this often happens when musical instruments are played together destructive interference occurs when waves overlap and a displacements are in the opposite direction this can result either in someone's or a softer sound then would be produced by the original waves a standing wave when two waves overlap frequency traveling in opposite directions combined in that situation nodes are where no movement of the medium occurs the music this unique frequencies are called harmonics and overtones which make the sound more aesthetically pleasing Architects and Engineers apply the physics of sound in order to design buildings with good acoustics musicians learn how the sound is created in there so they can maximize constructive and destructive interference effect on always the most common interference in radio or television waves occurs when two signals over line usually what happens is the frequencies are too close and make interfere with each other physicists have learned about the nature of waves function waves play in the universe waves transport the energy of disturbances true or false the number of wave Cycles in giving me the time is called The Wave the speed of the wave is called its sound waves are long always true or false longitudinal waves never need a medium to transport the energy true or false sound travels faster ground true or false visible light is transported by waves the Doppler effect only applies to sound waves true or false Echoes of sound and mirror images are examples of refracted waves true or false always can be distorted deflected or changed true or false

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waves and electromagnetic

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