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"I should point out, however, that at first some difficulty was experienced in observing the phenomena predicted by the theory, owing to the extreme smallness of the variations in the period of oscillation."
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Exlpore more Difficulty quotes

"It's not so easy... it's not possible."

"You can put in all the difficulties, jumps, runs, and any other devilish complexities you like, except octave spans and similar features which do not suit the formation of hands."

"The mistakes and unresolved difficulties of the past in mathematics have always been the opportunities of its future."

"I sometimes suspect that half our difficulties are imaginary and that if we kept quiet about them they would disappear."

"It seems that the greatest difficulty is to find the end. Don't try to find it, it's there already."

"I always anticipated difficulties in order to avoid scenes."

"A man who dreads trials and difficulties cannot become a revolutionary. If he is to become a revolutionary with an indomitable fighting spirit, he must be tempered in the arduous struggle from his youth. As the saying goes, early training means more than late earning."

"Our achievements speak for themselves. What we have to keep track of are our failures, discouragements and doubts. We tend to forget the past difficulties, the many false starts, and the painful groping."
Explore more quotes by Pieter Zeeman

"Had we really succeeded therefore in altering the period of vibration, which Maxwell, as I have just noted, held to be impossible? Or was there some disturbing circumstances from one or more factors which distorted the result?"

"On the basis of Lorentz's theory, if we limit ourselves to a single spectral line, it suffices to assume that each atom (or molecule) contains a single moving electron."

"Moreover, photography has made it possible to fix these images and now provides us with a permanent record of each observed spectrum, which can be measured out at any time."

"It was not simply out of a spirit of contradiction that I exposed a light source to magnetic forces. The idea came to me during an investigation of the effect discovered by Kerr on light reflected by magnetic mirrors."
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