Tag Archives: Isaac Newton

A sequence of high-resolution visible-light spectra of the Sun displaying Fraunhofer lines, captured at the McMath-Pierce Solar Facility at Kitt Peak National Observatory in Arizona. The wavelengths progress from the bottom to the top in each row, with violet at the bottom and red at the top.
1814: Decoding the Sun – The Evolution of Spectroscopy

Isaac Newton's 1672 experiments unveiled that sunlight is a spectrum of colors, leading to the development of spectroscopy by Joseph von Fraunhofer. This technique, which identifies spectral lines of different atomic elements, revolutionized our understanding [...]

A vintage engraving of Newton from 1856
1687: Isaac Newton and the Law of Gravity

Isaac Newton's groundbreaking work in physics, culminating in his Law of Universal Gravity, transformed our understanding of the universe. His Principia Mathematica, published in 1687, laid the foundation for classical mechanics and upheld the heliocentric [...]

The Moon, Earth, and Sun are gravitationally connected, a concept developed by Sir Isaac Newton. They exert powerful gravitational forces on each other based on their masses and the inverse square of their distances. These gravitational interactions are manifested as tides in Earth's fluid oceans.
1686: Isaac Newton and the Science of Tides

Isaac Newton's groundbreaking work in the 17th century established the scientific understanding of tides as a result of gravitational forces exerted by the Moon and Sun on Earth's oceans. This understanding revolutionized our knowledge of [...]