Liquid feeder and polishing apparatus

A liquid feeder comprising:

• a first arm horizontally extending above a polishing table and having a first nozzle configured to eject a first fluid onto the polishing table;
• a second arm horizontally extending above the polishing table and having a second nozzle configured to eject a second fluid onto the polishing table;
• a first rotation shaft supporting a proximal end part of the first arm;
• a second rotation shaft supporting a proximal end part of the second arm;
• wherein the second nozzle is closer to the first rotation shaft and the second rotation shaft relative to the first nozzle;
• a first rotation driver configured to rotate the first rotation shaft around an axis thereof to turn the first arm from a fluid feed position inside the polishing table to a retracted position outside the polishing table;
• a second rotation driver configured to rotate the second rotation shaft around an axis thereof to turn the second arm from a fluid feed position inside the polishing table to a retracted position outside the polishing table;
• and
• a controller configured to control an operation of the first rotation driver and an operation of the second rotation driver, wherein
• the first rotation shaft and the second rotation shaft are disposed coaxially with each other, and
• the controller is capable of controlling the operation of the first rotation driver and the operation of the second rotation driver independently of each other.