It is basic physics, I learned this in graduate school forty years ago. You can add two waves together, you can also subtract them. This is the theory behind noise cancelling headphones.
They are being used everywhere. Explain how 120+ food processing plants could be sabotaged and burned up in the last two years and no one is arrested or charged?
They are being used everywhere. Explain how 120+ food processing plants could be sabotaged and burned up in the last two years and no one is arrested or charged?