Human beings have always been visual animals. For the majority of our existence, we have relied mostly on our sight to find food and shelter. And now, with the rapid development of computers, multimedia, and cyberspace, our vision is becoming increasingly more important for interaction with our immediate environment and our world. The prime vehicle […]

Over the past hundred years or so, physics experiments have demonstrated that light has a dual nature. In many instances, it is convenient to represent light as a particle phenomenon, thinking of light as discrete packets of energy that we call photons. Now in this way of thinking, not all photons are created equal, at […]

The parts of light microscope are being discussed in this article. The parts of the light microscope are the following:
The magnifier, which is lodged in a cavity formed partly by the cap, and by the silver cup or speculum, which is a quarter of an inch thick at its edge, and whose focus is about […]

Sir Isaac Newton having discovered his celebrated theory of light and colors, was led to improve the telescope, and apply his principles most successfully to the construction of a compound reflecting microscope. On the 6th February 1672, he communicated to the Royal Society his designs of a microscope by reflection. It consisted of a concave […]