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Herbert Kroemer – Germany (1928–2024) Nobel laureate; August Krönig – Germany (1822–1879) Ralph Kronig – Germany, United States (1904–1995) Nikolay Sergeevich Krylov – Soviet Union (1917–1947) Ryogo Kubo – Japan (1920–1995) Daya Shankar Kulshreshtha – India (born 1951) Shaiwatna Kupratakul – Thailand (born 1940)
1894 – Paul Drude introduces the symbol c for speed of light in vacuum. 1895 – Hendrik Lorentz corrects his 1892 model, proposing a contraction by the Lorentz factor (γ). 1895 – Albert Einstein probably makes his thought experiment about chasing a light beam, later relevant to his work on special relativity.
100: Israeli-American electrical engineer [11] Paddy Bassett: 1918–2019: 101: New Zealand agricultural scientist [12] Preston Bassett: 1892–1992: 100: American inventor and aeronautics pioneer [13] Henry Beachell: 1906–2006: 100: American developer of "miracle rice" [14] Wilfried de Beauclair: 1912–2020: 108: Swiss-born German engineer ...
As an example of its accuracy, 18th century scientist Guillaume Le Gentil, during a visit to Pondicherry, India, found the Indian computations (based on Aryabhata's computational paradigm) of the duration of the lunar eclipse of 30 August 1765 to be short by 41 seconds, whereas his charts (by Tobias Mayer, 1752) were long by 68 seconds. [89]
1920 Arthur Compton invents the sodium-vapor lamp. [15] 1921 Junichi Miura creates the first incandescent lightbulb to utilize a coiled coil filament. 1925 Marvin Pipkin invents the first internal frosted lightbulb. 1926 Edmund Germer patents the modern fluorescent lamp. 1927 Oleg Losev creates the first LED (light-emitting diode).
Scientists Found a 12,000-Year-Old Monument—Turns Out It May Be Humanity’s Oldest Calendar ... August 9, 2024 at 7:43 AM. ... indicate the makings of a solar calendar that tracks days, seasons ...
The Mayan calendar’s 819-day cycle has confounded scholars for decades, but new research shows how it matches up to planetary cycles over a 45-year span ... 2024 at 10:50 AM. ... The 819 days of ...
The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy.They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope projects.