Various sensors can be attached to (or included in) multimeters to take measurements such as: 1  light level. 2  sound pressure level. 3  acidity/alkalinity(pH) 4  relative humidity. 5  very small current flow (down to nanoamps with some adapters) 6  very small resistances (down to micro ohms for some adapters)
The 1800s: Modern Golf Takes its Form: The 19th century is considered by many to be the period when the truly modern game emerged. The changes that primarily spurned this modernization were to the equipment of the game. Up to 1848, golf balls, as previously stated, were featheries, made of feathers and leather.
The oldest of these tournaments is the British Open, which began in the 1860s and is played annually in July. The U.S. Open, first played in 1895, is held each year in June. The PGA Championship is played in August and dates back to 1916.