Housing height1.07 m
1.17Window widths
8.8 tenthsShipping pallets
10.7 millionViruses
Photo from Wikimedia Commons
Traffic Light
The three-eyed signal that governs intersections/Everyday Objects
A standard vertical traffic signal has three 300 mm (12-inch) lenses arranged red on top, yellow in the middle, and green at the bottom. Modern signals use LED arrays that last 8 to 10 years compared to 1 to 2 years for incandescent bulbs. The first electric traffic signal was installed in Cleveland, Ohio in 1914.
Measurements
Housing width3.8 tenths m
31.7Skittles
1.1 tenthsParallel bar lengths
38 billionHard X-ray wavelengths
Lens diameter3 tenths m
7.5 billionthsEarth circumferences
60,000Spider silk threads
3.37Crayons
Signal head mass18 kg
360 billionYeast cells
180 billionthsAircraft carriers
Housing depth3.8 tenths m
4.47Shuttlecock lengths
808,511Blue light wavelengths
Mounting height5.5 m
5.1 tenthsGarbage truck lengths
1.8 tenthsWater polo pools