The Stuff of life – Vitamin B12

The red crystals are Vitamin B12, which we need for DNA synthesis and myelination of our nerve fibres. Vitamin B12, or Cobalamin, has a Cobalt group which gives this characteristic red color

From Hotel Park view from Heema Hospital Area From Raj Bhavan Tinali
Dust Particles from H-Sector area Ganga Market Area From Civil Secretariat


Dust Particles from Vivek Vihar Area.

Dust Particles

Dust Particles from location Chandranagar, Itanagar. Arunachal Pradesh

One day workshop on Foldscope at Purulia

Department of Environmental Science, University of Calcutta, organised a one day workshop at C.S.N High School, Balarampur, Purulia, West Bengal, India on 13th April 2019. Introductory Session- The workshop started with Dr. Punarbasu Chaudhuri, giving the basic idea of foldscope and the microscopic world to the participants. The participants were students of standard 6 to…

Iron (II) sulphide from boiled egg

The dark ring we see when we overboil an egg is caused by the reaction of Iron in the yolk reacting with sulfur in the albumin. This produces Iron II sulfide. Here you can see the dark Iron II sulfide with plane polarized light And here is the birefringent Iron II sulfide under polarized light!

During Workshop

Workshop at Govt. Hr. Sec. School, Ganga village, Itanagar, Arunachal Pradesh India.


Cuso4 crystal viewed under Foldscope Instrument

Dust Particles

Dust Particles Collected at Raj Bhavan Tinali, Itanagar, Arunachal Pradesh, India

Dust Particles.

Dust Particles Collected from Near Heema Hospital, Itanagar, Arunachal Pradesh, India

You clot me!

A few days ago I tried observing a wet mount of my own blood. The very same slide now has a large number of fibrin networks, the end result of the various steps of pathways that lead to clotting of blood. These fibrin networks not only prevent leaking of blood out of a vessel, they…