The Kilcher Homestead is a 600 acre Pioneer Homestead that has been protected for perpetuity via a ConservatIon Easement. The Kilcher Family has also preserved the Historic Cabin and site as a LIving Museum.
Yes, negative pH is possible, but not in water as a solvent. The range of pH in water is 0 to 14 (to be more precise, it is -1.7 to 15.7, but for simplicity's sake, we start with the usual values.) Thus, what pH indicates is the ability of the acid to form H3O+, which can then donate a proton.
pH basically tells you of the concentration of hydronium ions in water. Basically pH is the negative exponent of the concentration in water. For example pure water has pH of 7. Some water molecules (H2O become hydroxide OH-and hydronium H3O+) ions. pure water has 10^-7 moles of hydronium ions per liter of water.