Annus mirabilis is a Latin phrase that means “wonderful year”, “miraculous year” or “amazing year”. This term was originally used to refer to the year 1666, and today is used to refer to several years during which events of major importance are remembered.
Albert Einstein singlehandedly added 1905 as another Annus Mirabilis. In this year, his creativity peaked and he made the revolutionary scientific discoveries. He was just 26 years old. During that year he did:
March: Proved that the light consists of photons thus proving the quantum nature of the light.
May: Proved the existence of the atom.
June: Special Theory of Relativity, which forced the laws of motion by another great physicist Newton as the corollary with the objects moving at lower speeds.
November: The most conscise and beautiful equation relating mass and energy. Proving that mass and energy are two names of the same thing. That enormous amounts of energy are condensed to make small amounts of mass. In other words, enormous amounts of energy are contained in the mass.
And after that he became a superstar
Gold as everyone knows is a noble metal sought after by everyone. By being noble means it is resistant to chemical reactions like corrosion by air and water combination.
The answer tothe question why it has the colour it has lies in electronic configuration of gold atoms. Its electronic configuration is [Xe] 4f14 5d10 6s1 where Xe stands for Xenon. The outermost orbitals are 5d and 6s. There is one electron in the outermost shell. In the geometric structure, atoms are arranged in a particular config And the lone electrons present the 6s orbitals are diffused in the lattice which means that individual electron in a atom has lost the address of parent atom and now belong to the community of gold atoms.
How do the objects we see have different colours? Colours are hidden in white light emanating from the sun. The visible spectrum of light components is composite of 7 colours remembered using “VIBGYOR” where V is for violet and has the maximum energy in the visible spectrum and R is for red with lowest energy.
When it falls on an object, the object absorbs some fraction of the light and reflects the rest of it. Which color or colors wavelengths it will absorb depends upon the unique structure of the object molecules. We see the resultant of colours which are reflected.
In case of gold, the energy difference between the 5d and 6s levels is 2.7 electron volts. The blue light has exactly this energy in its photon packets. So when light falls on it, it completely absorbs the blue fraction of the light. The remains reflected resultant light is exactly the colour which is that of gold.
In our country where mythology plays a big role in the lives of its inhabitants, many sites like hills, rivers, and caves have their associations with the mythology. One such concerns the Lord Krishna and is called Govardhan Parvat (mountain).
The legend is that when the uninterrupted deluge threatened to innundate Mathura, Krishna lifted the entire mountain on his little finger to make an umbrella to protect the Mathura.
UP government has planned to revive the almost barren Govardhan parvat situated about 23 kilometres from Mathura. Government plans to plant the herbal plants on the mountain. These are:
Kadamba: It is a tropical tree. Krishna and Radha are said to have conducted their love play under the cool shade of the tree. It is used as one of the raw materials in the preparation of “itars”.
Tamala or Indian bayleaf or tezpatta: It is commonly used in Indian culinary as well as medicines particularly for alleviation of diabetes due to the presence of highly antioxidant enzymes.
Karira: Scientific name is Capparis decidua. It’s spicy fruits are used for culinary purposes like vegetable, curries, and pickles. It is also used in medicine.
Pakar : It belongs to mulberry family. Leaves have sour taste.
Pilkhan: Scientific name Ficus virens. It grows to heights of about 100 feet. It is Avenue tree. It bears “strangler figs” because they can germinate on other trees and strangle them. It is used in Thai cuisine.