Monthly Archives: January 2000

Physics is so beautiful

Symmetry and Nature are related on the deepest level . The Conservation

   laws of Physics can be derived from considerations of symmetry of

   different types . This means that since our Universe has certain kinds

   of symmetry THAT IS WHY it has the corresponding kinds of conservation

   laws .



   Law of conservation of linear momentum is related to linear symmetry

   or putting it in other words : conservation of p is related to

   symmetry about x .



   Law of conservation of angular momentum can be derived from

   rotational symmetry . conservation of L is due to symmetry of theta



   Law of conservation of Energy is because all eqns of physics are

   same when we add or subtract time from them . conservation of E

   is bacause of symmetry wrt t .



  Also notice that these conservation,symmetry pairs cannot be measured

  at the same tine ie the Heisenberg’s uncertainty principle applies

  to them .



  so u cannot measure x and p at the same time .

  u cannot measure E and t at the same time .



  All the other conservation laws too are due to some or the other

  symmetry . The conservation of charge for example , is related

  to something called gauge symmetry .



  See how deep symmetry is embedded in the fabric of the universe !!!!!



Painting Styles

I tried to understand the distinction between different painting styles.

I am not sure if I achieved my objective . There are some styles that I understood quite well . Some others are quite blurred .

The following are the major styles alongwith examples and an artist who was a master of that style . Comments/corrections are most welcome .

But make sure that u look at the paintings . There is no point without that . Some styles I dont understand at all so I have kept that section blank .



CLASSICISM : A style of painting inspired by ancient Roman/Greek paintings and literature . Emphasis is on form , proportion and restrained emotion .



ROMANTICISM : This is the exact opposite of Classicism . This stresses

on strong emotions,imagination and freedom from classical norms .

The stress is on the individual , the personal , the spontaneous …


Delacroix was the greatest French Romantic painter .

See his painting “Combat of Giaour and Hassan ” :






EXPRESSIONNISM : The stress here is on the expression of inner experience

and not a portrayal of reality . So the emotions of the people come out

using colors , brush strokes . The emotions that are aroused in the artist

when he sees a scene are depicted .


Vincent Van Gogh was a expressionnist painter . Remember that even in his

self portraits or in his painting of the sunflowers his own turbulent

emotions come out is the form of wild brush strokes .


See his ” still life with four sunflowers ” :



see Van Gogh’s seff portrait :




Notice how wild the colors are .



IMPRESSIONNISM : Opposite of expressionnism . The aim is to concentrate on

the general scene and the impression it creates on the artist . Primary

colors were used .



Claude Monet was an impressionnist painter .


see his painting : The waterlilies( The clouds) and notice the difference

from Van Gogh’s sunflowers .






REALISM : To give an accurate objective description of nature or life .

This style rejects imaginative idealization .


Caravaggio was a realist . See his painting ” The fortune teller ” :






Renaissance : I could  not understand this one . Or its differences

from the rest 😦



CUBISM : The subjects are portrayed using geometric forms without realistic

detail . Often there are intersecting cones , cubes etc .


eg Picasso , and Joan Gris . See his ” Man in a Cafe ” 







SURREALISM : An attempt to express the subconscious by fantistic imagery .

Dreamy wierd stuff .


eg Salvador Dali , Yyes Tanguy . See Tanguy’s “Indefinite Divisibility ” :





Fauvism : Dont understand

Futurism : Something about mechanics and modern life etc .

Baroque  : Dont understand .