Khoj ke natija
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- <center>'''<math>f = v/\lambda</math>'''</center> .../math> (lambda) wavelength hae. Light ke frequency ke formula hae '''<math>f = c/\lambda</math>''' jahaan pe c [[speed of light]] hae.<ref>{{cite web|ur ...1 KB (202 sabd) - 10:50, 20 Mai 2024
- |image = Einstein1921 by F Schmutzer 4.jpg ...5 KB (756 sabd) - 19:17, 4 Actobar 2023