Question
Who invented the pendulum
clock?Solution
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.Â
Statements: B ≥ U > P = E ≥ X; X > K > N ≥ J
Conclusions: I. N < P   II. J ≤ X
In the question, relationship between some elements is shown in the statements (s). These statements are followed by two conclusions. Read the statemen...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is /are definitely true and the...
Which of the following set of symbols should be placed in the blanks respectively (from left to right) in the given expression in order to make the expr...
Statements: S = T, U < L, V ≥ S, T ≤ U
Conclusion:
I. T ≤ V
II. L > T
Which among the following symbols should replace the question mark [?] (in the same order from left to right) in the given expression in order to make b...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is/are definitely true and th...
Statements: A > Y = D > Q, M ≤ B > P > Y
Conclusion:
I. Y ≤ M
II. B > QÂ Â
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is/are definitely true and then...
Statements: G@B; W#Z; B%W
Conclusions:
I) G@Z
II) Z@B
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