Data transmission starts with electromagnetic waves, but how do those waves really make data move? Learn how modulation makes data transmission possible.
Unfortunately this video continues to give the false impression that an electromagnetic wave actually constantly goes up and down, up and down, up and down as it travels forward through space. In actuality, the sine wave shape is just a graphical representation of the intensity of the electric and magnetic fields of the wave as it travels through space.
@@ultrameticulous There is a pretty good video on RU-vid called “What is an electromagnetic wave?” as part of the “Physics Made Easy” series of videos. It doesn’t have anything to say specifically about amplitude or frequency modulation, but it gives a good introduction to how the sine wave shape is used to represent the intensity and direction of the electric and magnetic fields. There are many other videos on this subject of course on RU-vid of varying quality and you can always use one of the search engines as well. Hope this helps.
i don't think so. Sound waves are depicted as 'Sine curves' and 'Transverse' in most books with amplitude showing the intensity of loudness. I don't think that undermines the fact that they are longitudinal and they propagate parallel to their motion as its mostly made clear. The subsequent diagrams after the base understanding is to bring the idea closer to the mind of the learner. Its much easier to visualize frequency and wavelength of any 'wave' using a sine curve representation, otherwise, the video didn't even mention the details you're saying...
@@SttmpJohnson idk why RU-vid didn't display your comment. I had to click your account to see it. I understand the concepts. I was referring to what you said, looking for a true visual depiction versus a graphical representation. I actually stumbled on one shortly after asking you. "How does an antenna work - ict #4"
I didn’t do any research but I always knew it doesn’t make sense for a wave to move up and down.. I really need more info on this, could you please recommend me a video or article to explain what is actually happening??
We can only see a very small portion of it, between 700 (“red”) and 400 (“violet”) nanometers and when all are perceived at once we call it “white”. Beyond violet there’s UV, bluetooth/wifi/TV/cellular signals and cosmic radiation, and beyond red there’s IR heat signatures, radar and radio signals. Hearing is how we make sense of vibration waves, and vision is how we make sense of radiation waves.
RF Engineer here. This whole thing is just garbage. If you want to understand how we transmit information by radio waves, please ignore this mess and look elsewhere. If their intent was to create misconceptions, they hit the mark.
