Who invented the pendulum clock?
Galileo Galilei discovered the isochronism of the pendulum in 1583. This was the turning point from the age of mechanical clocks not controlled by periodic motion to the age of mechanical clocks moved by continuous oscillation in a fixed cycle. Galileo conceived of an isochronous pendulum clock in 1637, but never went on to complete it. In 1656, fourteen years after Galileo’s death, Christiaan Huygens used a pendulum for a weight-driven clock with a crown wheel escapement, thereby inventing the first pendulum clock.
Under conservation tillage soil aggregates stability (%) increases because of
Term vitamin was given by
Sorghum crop is commonly attacked by:
A. Sorghum stem bour
B. White Ants (Termite)
C. Wheat Armyworm
D. Sorghum shoot fl...
Match the following:
Which among the following is a protective fungicide?
Given below are two statements:
Statement I: India is the largest producer and exporter of cinnamon in the world.
Statement II: True cinna...
Ghatti gum is obtained from:
Phenol reacts with zinc dust gives:
Match List-I with List-II and select the correct answer using the codes given below the lists.
Vertical section of soil is called as