The NIST ytterbium-doped fiber laser used can provide up to 530 watts of laser output at a wavelength of 1.07 microns. At full power, they were able to deliver as much as 3.5 uN (0.35 mg) of force to the mirror. The experiments showed the expected linear relation between measured force and laser output.
It's just the way coffee is. Coffee is acidic. That's what probably upsets your stomach, especially if you're not eating or drinking other fluids throughout the day. People say that using coffee grounds are excellent for growing plants. BUT, they are only good for growing plants that are acidic soil loving plants.
Study shows five cups of coffee a day could cause obesity. 1  Previous studies showed that drinking coffee in moderation could lead to weight loss and cut risk of type 2 diabetes.  But new findings show chlorogenic acid found in coffee may lead to weight gain and insulin resistance if five or more cups are consumed.