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Snemalna Knjiga Besedilo

  • Can you tell me more about waves?
  • First, lets talk about longitudinal and transverse waves. Longitudinal waves are waves where the vibration of the medium is parallel to the direction of the wave. They move side to side/ left to right. Transverse waves move up and down, they can travel through empty space.
  • You the song I was singing earlier? That was about the electromagnetic spectrum. It is the name of the range of the electromagnetic wave when placed in order of increasing frequency.frequency is the amount of waves that can be produced in a certain time period.
  • The characteristics of a wave are the frequency( which I explained earlier), the amplitude, rarefaction, compression, crest, wavelength, and trough. The wavelength is just as it sounds, it is the length or the distance from one crest to another. The crest is the highest point in the wave. The trough is the lowest.
  • Wow! that's a lot of information on waves!
  • Well there is so much to tell you!!!! Compression is the area where  the particles of the longitudinal wave are closest together. Rarefaction is where the particles are the farthest apart. Then, the amplitude is the maximum distance the particles of a medium move away from their rest position as a wave passes through the medium.
  • Me, causaully walking on the sidewalk.
  • Next, i'll tell you about *mechanical waves*, they must travel through a medium  unlike electromagnetic waves, when I say a medium I mean it could be a solid, liquid, or gas. Additionally, both transverse and longitudinal waves are mechanical but electromagnetic waves are only transverse waves.
  • Finally, I will tell you about light waves, this includes refraction, diffraction, absorption, transmission, concave, and convex. Refraction is bending due to a change in speed, diffraction is the bending of waves around the edge of barriers. Transmission means passes right through. Lastly, concave and convex are two different things so don't get them mixed up. concave is an inwardly curved mirror, it can form virtual or real images depending on the position of the object. convex lenses are outwardly curved mirrors, and it Spread out rays that appear to come from a focal point behind the mirror
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