Sarang Sheth:  The Helix Lamp uses shafts of light to tell the time


Sarang Sheth:  The Helix Lamp uses shafts of light to tell the time
editor_iot
19/08/2021 – 11:49

“Light and time have a pretty old bond. In science, light and time are collectively used to determine the ‘light year’, a unit of measurement used to describe the distance between intergalactic objects. The speed of light is also a universal constant, and a physical barrier that Einstein says is impossible to break… but the scientific connotations aside, light was used to tell the time back before clocks were invented. The sundial is perhaps one of the oldest man-made time-telling instruments there are – and they relied on the sun’s shadow to give one a rough estimate of the time of the day (in fact, that’s where the phrase is believed to have originated from, since we couldn’t really tell the ‘time of the night’).”

 


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