73 years agoThe Transistor and the Computer
1954
Practical Solar Cell
Bell Labs publicly demonstrates the first practical photovoltaic cell.
Art style · 1950s laboratory science magazine illustration
World population
2.69Bpeople
1/3 of today
Primary energy power
3.7×10¹²W
1/5 of today
London → New York message
0.02 seconds
1 times faster than today
Every timeline entry cites its source. Metrics interpolate logarithmically between sourced data points. Forecasts include institutional and community views, and attributed site scenarios; years are not guaranteed realization dates. Illustrations are AI-generated in each era's style.
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