Published on November 21, 2024
On This Day in Tech History
Stories Published November 21 Throughout History
Historic Tech Events
Tesla launched the SUV Cybertruck

2019
Tesla launched the SUV Cybertruck. A gaffe occurs during the launch event when its "unbreakable" windows shatter during demonstration.
Albert Einstein's mass energy equivalence was published

1905
Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², was published in the journal Annalen der Physik.
The first measurement of the speed of light

1676
In 1676, the Danish astronomer Ole Roemer (1644–1710) became the first person to measure the speed of light.
2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
Published on November 21, 2024
2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
Published on November 21, 2023
2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
Published on November 21, 2022
2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
Published on November 21, 2021
2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
Published on November 21, 2020
2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
Published on November 21, 2019
2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018
Published on November 21, 2018