What determines the brightness of the star and how to measure it?
The starry night is a nice view for everyone I guess quite often we like to lie on the ground and gaze at the sky full of stars. In the whole Milky Way, we...
Tagged: Light
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 […]
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...
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...
Top 21 things to see during solar eclipse
At the finish of my considerations about the solar eclipse phenomena observations, done during the last total solar eclipse in the USA as well as another few partial solar eclipses, which I have been...
A short adventure with lunar eclipse
A total lunar eclipse occurred recently on Monday 21st of January (Pic. 1). For me, it was the next opportunity to see this rare phenomenon, especially because I couldn’t make it in July 2018,...
Light level measurements during total solar eclipse
The illuminance level and sky brightness are very important elements of solar eclipse phenomena because both are clearly noticeable by the observer along with his eye adaptation. When the eclipse phase is deep and...
What is a light transition? What examples of it can we see?
Light is omnipresent in the Universe and the environment. This is electromagnetic radiation, that can be detected by the human eye. I have written more about the light and the ways of measurement in this...
Why the haze is an important weather factor, part 2 – impact on visibility and light scattering
This writing is a continuation of a whole article about haze as an important weather factor. Previously I have described the basic types of haze and I drew attention to the impact the atmospheric...
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....
Light scattering in the Earth’s atmosphere part 3 – clouds, haze and surface
Previously I have described the light scattering mechanism on the smallest particles of the Earth’s atmosphere, where mainly the Rayleigh Scattering plays a role. Now is the time to round off this whole article...
Light scattering in the Earth’s atmosphere part 2 – why is the sky blue and how the sky colour change?
When we ask ourselves why the sky is blue we can think about the most important type of light scattering in the Earth’s atmosphere. This is Rayleigh scattering. I was writing about this type...
Remote observation of the total lunar eclipse
Since I bought the DSLR camera I dreamt about the total lunar eclipse observation. I wanted to repeat my observation scheme on different, much better equipment. Recently I observed the total lunar eclipse in...
Light scattering in the Earth’s atmosphere part 1 – scattering and related phenomena
1. INTRODUCTION My deep interest in the light scattering in Earth’s atmosphere arose out of my observations of the behavior of the Earth’s atmosphere, especially around sunrise, sunset (golden hour, blue hour, twilight), and...
What is the colour of Martian sky?
The Mars Exploration Program has been launching for around 20 years since the first probe Mars Pathfinder done by NASA landed on the Red’s Planet surface. For this time another four rovers touched down...
Total solar eclipse vizualisation on Google Earth, part 2
<<< Read the 1st part of The solar eclipse visualization on Google Earth In the 1st part of this article, I showed you how to create the “umbra” in Scribble Maps and use it...
The remote observation of partial solar eclipse
I would like to show my observation output. The last solar eclipse was visible throughout the southern part of South America in the morning and next in the western part of Africa during the...