Lamps Balanced By Pressure and Friction
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This construction is quite common in Italian lamps. Gravity causes the parallelogram to deform, making the gap between the long arms smaller. This increases pressure on the rubber in the gap, and the resulting friction holds the arm in balance. |
Read more about this topic: Balanced-arm Lamp
Famous quotes containing the words lamps, balanced, pressure and/or friction:
“The lamps are going out all over Europe; we shall not see them lit again in our lifetime.”
—Edward Grey, 1st Viscount Grey Of Falloden (1862–1933)
“[T]hat moment of evening when the light and the darkness are so evenly balanced that the constraint of day and the suspense of night neutralize each other, leaving absolute mental liberty. It is then that the plight of being alive becomes attenuated to its least possible dimensions.”
—Thomas Hardy (1840–1928)
“He who is of a calm and happy nature will hardly feel the pressure of age, but to him who is of an opposite disposition youth and age are equally a burden.”
—Plato (c. 427–347 B.C.)
“The admission of Oriental immigrants who cannot be amalgamated with our people has been made the subject either of prohibitory clauses in our treaties and statutes or of strict administrative regulations secured by diplomatic negotiations. I sincerely hope that we may continue to minimize the evils likely to arise from such immigration without unnecessary friction and by mutual concessions between self-respecting governments.”
—William Howard Taft (1857–1930)