Comments

• Eli Whitney invented the cotton gin.

  in Who was a famous agricultural engineer? Comment by lloyd-j June 2021
• In the case of AM radio, we simply increase the amplitude of the radio signal when the sound is strong and we lower the amplitude when the sound is quiet. At the receiving end we just have to detect the amplitude of the RF signal and that is the aud…

  in How does a radio signal work? Comment by lloyd-j May 2021
• In the case of AM radio, we simply increase the amplitude of the radio signal when the sound is strong and we lower the amplitude when the sound is quiet. At the receiving end we just have to detect the amplitude of the RF signal and that is the aud…

  in How does a radio signal work? Comment by lloyd-j May 2021
• In the case of AM radio, we simply increase the amplitude of the radio signal when the sound is strong and we lower the amplitude when the sound is quiet. At the receiving end we just have to detect the amplitude of the RF signal and that is the aud…

  in How does a radio signal work? Comment by lloyd-j May 2021