A closer look
Some of the devices on your shelf trace their roots to battlefields. Soldiers strapped tiny trench watches to their wrists for synchronization—soon, everyone had a wristwatch. Radar, born to warn against surprise air raids, ended up shepherding biscuits in your microwave oven. Jet engines that once roared across wartime skies now hum beneath you on peaceful flights to holiday destinations. Time and again, the harshest inventions of conflict melted into the comforts of domestic life, reminding us that even destruction can inadvertently plant seeds of convenience.
