1921: Marconi makes first radio broadcast.
1921: Township of Portnalong formed to take overspill of weavers from Lewis and Harris.
1922: Raasay purchased by the Department of Agriculture and Fisheries.
1924: First insecticide.
1926: Television invented.
1926: Skye's first telephone exchange, Portree.
1928: Colour TV invented.
1928: Penicillin discovered.
1930: Jet engine developed.
1933: Radar invented.
1933: Duke and Duchess of York open Boys' Hostel in Portree.
1934: Nylon developed.
1936: First flight of helicopter.
1937: Photocopier invented.
1937: Raasay House leased and opened as a hotel.
1937: Diatomite extraction resumed at Loch Cuithir.
1939: Forestry Commission owns 8,717 acres of Skye.
1939: 192 telephone subscribers.
1939: DDT developed.
1939: Kyle ferry - charge for car equivalent of 40p.
1941: Aerosol can invented.
1942: Norman Collie, one of the greatest Cuillin climbers, buried in Struan churchyard.
1942: Nuclear reactor developed.
1943: Jacques Cousteau invents aqualung.
1945: The Inger Toft torpedoed west of Dunvegan.
1945: USAF B-17 bomber crashes into peak of Beinn Edra, Trotternish.
1946: Sales of Skye sheep total £48,000.
1947: Transistor invented.
1949: The arrival of electricity on Skye when a submarine power cable crosses the Kyle.

Courtesy of Geoff Holman