Today I watched a video on photography and learned about how to make a gear bag. I also learned how to use my DSLR camera by changing lenses and shutter speed. But I also learned how to hold the camera for stability.
Then I learned about radio waves. AC stands for alternating current and usually it takes 60 to cycle through once. Also AM stands for amplitude modulation and FM stands for frequency modulation. Finally we learned about phonetic alphabet and that is the alphabet for Morse code which is used world wide.