Wheatstone enjoyed a lifelong friendship with Faraday, who because of his acute shyness usually got Wheatstone to deliver his lectures for him. Roget was like Faraday an old friend. Ørsted, twice Wheatstone’s age, discussed Chladni figures with him on a London visit. Henry met Wheatstone (and Faraday) on a visit to Britain in 1837. Wheatstone corresponded with Siemens on electromagnetic resistance, with Stokes on the chemistry of colour, and with Maxwell on issues relating to telegraphy.