Long time no post! Well, I was in a spring break last week and had no assignment during the break, which was great great great.
I came back with a new and important topic "wave". This is quite important part that you will never miss during the science class.To the main idea, what do you think when I say wave? Ocean? Dancing? Light? Sound? Microwave? Are you thinking why I wrote light, sound and microwave? well, I will explain it to you.
What is wave? In the subject science, wave is a rhythmic disturbances that carry energy without carrying matter. It is confusing, I know. So basically, imagine ocean and that wave you are thinking can be anywhere like water, air, ground, and outer space. You need to know that waves can use median(the matter like air, water) but doesn't shift together, in the case it uses median. But why is wave happening? It is for transferring energy. If there is a sound, the wave is a sound, the energy. If it is the light, light is an energy it's carrying.
In a big range, there are two types of waves. One is mechanical wave and the other one is electomagnaic wave. To be honest, in my word, mechanical wave is the regular wave and electromagnatic wave is the not regular wave. It is not, but it is easier to me to think that way. So...
But electromagnatic wave is a wave that does transferr energy WITHOUT median.
For example, light is one. Did you ever wonder how the light comes in across the space which does not contain oxygen? Well, as I said, it is because you don't need median. Like light, radio, x-ray, ultraviolet and infarared waves.
There are 2 types of waves inside mechanical wave. It is transverse wave and compressional wave. Transverse wave is a wave that moves up and down but that has energy going direction of 90degrees of the way the wave moves. For example, there is light
Compressional wave is when wave moves back and forth instead of up and down. The direction energy move is same way of the wave.
Okay, now I will tell you how to make sound waves. I mean, how you make sounds. Sounds occur by the objects' vibration. Like guitar for example, when you hit the string, the string vibrates and make sound. Air takes the sound in compressional wave way, and that vibrates your eardrum and then canal, and send it to your brain in a process like this.
Lastly, I will tell you about the wave.
Crest- Crest is the highest point of the transverse wave.
trough- Trough is the lowest point of the transverse wave.
Amplitude- Amplitude is the distance between the middle of wave and the crest or trough.
Wavelength- Wavelength=1/frequency. It is the distance between crest to crest or trough to trough
frequency- Is the amount it vibrates in a second. Unit is H. It shows the pitch of the sound.
Done with my post today! Thank you for reading and I hope you understood well. Than I'll see you in a week~
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