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.
Close-up of a woman pouring a cup of coffee. If you experience bladder pain, frequent or urgent urination, or urinary incontinence, everything from your social life to your ability to get a good night's sleep can be negatively affected. Coffee can trigger bladder irritation due to its often acidic composition, in addition to its diuretic effects.