Category: Optics

Northern Ireland seen from Helvellyn 0

The aspect of light reflection in the long-distance observations

This article presents the result of the longest distance observation in my life. Because it was an effect of the light phenomenon, not widely discussed by myself so far I decided to develop this topic, because of its influence on the far realing views during some specified conditions (tick haze trapped in low-level of the […]

Stevens brightness law 0

The role of contrast in ability of human vision

The contrast issue has been mentioned in this article, and either during the description of the role of horizontal visibility in long-distance observations. Because the information is not sufficient enough for my further studies...

Albany, WA, Starlight 0

How bright the starlight is?

A vast majority of people around the World don’t realize something like starlight. Nowadays, when skies are highly polluted with light, most people cannot even see the Milky Way in the sky. It’s known...

LUX meter 0

Light around us and how to measure it

Light surrounds us everywhere. This is an electromagnetic wave, which is the fastest in the environment. For Earth, the main source of light is the Sun. Another source is artificial lightning, created by humankind....