United States or Burundi ? Vote for the TOP Country of the Week !
In most cases the motion is communicated by means of a detent, attached to some reciprocating part of the engine, to a ratchet wheel which gives motion to the other wheels in its slow revolution; but it is preferable to derive the motion from some revolving part of the engine by means of an endless screw, as where the ratchet is used the detent will sometimes fail to carry it round the proper distance.
The 'fresh systems' referred to was his 'mechanical' telegraph, consisting of two letter dials, working synchronously, and on which particular letters of the message were indicated by means of an electro-magnet and detent.
They are forces of detent in situations in which no other force produces equivalent effects, and each is a force of detent only in a specific group of men. The memory that an oath or vow has been made will nerve one to abstinences and efforts otherwise impossible; witness the "pledge" in the history of the temperance movement.
When these crystals are warmed, the detent is lifted, and an outflow of light immediately begins." How often subtle analogies in physical nature whisper interpretations of vexing psychological enigmas? Was Erle Palma an animated, human fluor-spar?
Had the latent capacity, the potentiality of tenderness in his character been suddenly actualized, by the touch of that girl's gentle hands, the violet splendour of her large soft eyes, which lifted for ever the detent of his cold isolating selfishness?
Before the end of March he invented the clock-work alarm, in which an electro-magnet attracted an armature of soft iron, and thus withdrew a detent, allowing the works to strike the alarm. This idea was suggested to him on March 17, 1836, while reading Mrs. Mary Somerville's 'Connexion of the Physical Sciences, in travelling from Heidelberg to Frankfort.
The apparatus is kept in its place by what is called a slip-stopper, a sort of catch-bolt or detent, which can be unlocked at pleasure, by merely pulling a trigger. Upon withdrawing the stopper, the whole machine slips along the rods, and falls at once into the ship's wake.
Scientists tell us that "there are in the mineral world certain crystals, certain forms, for instance of fluor-spar, which have lain darkly in the earth for ages, but which nevertheless have a potency of light locked up within them. In their case the potential has never become actual, the light is, in fact, held back by a molecular detent.
I tell you it is the lock of that box, and I broke it open myself!" "Yes," answered Hewitt calmly, "it was on that box, and you broke it open yourself; but all the same it is not your lock. Let me explain. These are very good little padlocks, with an excellent lever action, 'dogged against detent, as the technical phrase goes; so that only the key properly made for each lock will open it.
In the same manner air may be compressed in an air-gun, and held thus, with the force, as it were, imprisoned, for any length of time, until at last, when the detent is released by the trigger, the elastic force comes into action, exercising in its action a power precisely the same as that with which it was compressed.
Word Of The Day