Who measured the velocity of light first? (1) Galileo (2) Newton (3) Romer (4) Einstein Answer: (3) Galileo is often credited with being the first scientist to try to determine the speed of light. Galileo’s experiment was carried out by the Accademia del Cimento of Florence, Italy, in 1667, with the lanterns separated by about one … Read more
What is the wavelength of the visible spectrum? (1) 1300 A°–3000 A° (2) 3900 A° – 7600 A° (3) 7800 A° – 8000 A° (4) 8500 A° – 9800 A° Answer: (2) The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye. Electromagnetic radiation in … Read more
We have not been able to verify your authority to this domain. On your domain registrar’s website, locate your Domain Name System (DNS) settings and enter the following two CNAMEs: (Name: www, Destination: ghs.google.com) and (Name: 54ee3qfqgrti, Destination: gv-h5s67tsxtbitwa.dv.googlehosted.com). See https://support.google.com/blogger/answer/1233387 for detailed instructions. Support page link