Which came first, the bicycle or the lightbulb?

the bicycle came first, by 62 years. Karl Drais rode his running machine near Mannheim.

Side by side

the bicycle

The first two-wheeler you could balance and steer was Drais's laufmaschine of 1817, which had no pedals — you pushed with your feet. Pedals arrived in the 1860s, the chain-driven safety bicycle with equal wheels in 1885, and the pneumatic tyre in 1888. The bicycle is younger than the steam locomotive, younger than photography's first experiments, and roughly contemporary with the stethoscope.

the lightbulb

Edison did not invent the electric light. Humphry Davy demonstrated an arc lamp in 1802, and at least twenty inventors produced incandescent bulbs before him; Joseph Swan demonstrated one in Newcastle in 1878 and was granted a British patent, which is why Edison eventually had to merge with him as Ediswan. What Edison produced in October 1879 was a bulb that lasted long enough and cost little enough to sell, together with the generating and wiring system to make it useful.