Let There Be Light…

A photograph showing the sun reflecting over the waters at Loch Kathrine through a curtain of trees. Low sun. Image: NaturPhilosophieFiat Lux…

Light.  Most of us take it for granted during the day.  And at night, we have learned to domesticate it.  Light, the natural agent that stimulates our sense of sight and makes things around us visible.  Continue reading Let There Be Light…

Constant Matters

Pi_NumberPhysical Constants (SI Units)

Avogadro Constant N_{A} = 6.022 \times 10^{23} mol^{-1}

Bohr Radius a_0 = 5.29 \times 10^{-11} m

Boltzmann Constant k = 1.381 \times 10^{-23} JK^{-1}

Charge on an Electron e = - 1.602 \times 10^{-19} C

Gravitational Constant G = 6.673 \times 10^{-11} Nm^{2} kg^{-2}

Magnitude of Acceleration due to Gravity g = 9.81 m s^{-2}

Permeability of Free Space \mu_{0} = 4 \pi \times 10^{-7} T m A^{-1}

Permittivity of Free Space \epsilon_{0} = 8.854 \times 10^{-12} C^{2} N^{-1} m^{-2}

Speed of Light in a vacuum c = 2.998 \times 10^{8} m s^{-1}


World Views

Astronomical Beginnings

Early astronomers already make the distinction between stars and planets, as the former remain relatively fixed for centuries, while the latter wander an appreciable amount in a comparatively short time.  But that’s not all!

Continue reading World Views

Little 'Bytes' about Natural Phenomena, Theoretical Physics and the Latest Worldwide Scientific Findings. Edited from Glasgow, Scotland.


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