31. Professor Charles Wheatstone had invented stereoscopy, and revealed it to the world in 1838. 32. More accurate instruments may use a capacitance bridge configuration, similar to a Wheatstone bridge. 33. Other viewers, include the Wheatstone Mini-Scope and the Adjustable 3D Prism Glasses. 34. It took English inventor Charles Wheatstone to squeeze both chords and keyboard together in one squeezebox. 35. Only Great Britain with its extensive overseas empire kept the needle telegraph of Cooke and Wheatstone . 36. The Wheatstone bridge illustrates the concept of a difference measurement, which can be extremely accurate. 37. At Christchurch, Marylebone, on 12 February 1847, Wheatstone was married to Emma West. 38. One of the most important appointments was that of Charles Wheatstone as professor of Experimental Philosophy. 39. Meacham's circuit included a quartz crystal oscillator and a lamp in a Wheatstone bridge. 40. The tunnel saw one of the first uses of the Wheatstone of the Wheatstone bridge fame.
