slovodefinícia
Reaction wheel
(gcide)
Reaction \Re*ac"tion\ (r[-e]*[a^]k"sh[u^]n), n. [Cf. F.
r['e]action.]
1. Any action in resisting other action or force; counter
tendency; movement in a contrary direction; reverse
action.
[1913 Webster]

2. (Chem.) The mutual or reciprocal action of chemical agents
upon each other, or the action upon such chemical agents
of some form of energy, as heat, light, or electricity,
resulting in a chemical change in one or more of these
agents, with the production of new compounds or the
manifestation of distinctive characters. See {Blowpipe
reaction}, Flame reaction, under Blowpipe, and
Flame.
[1913 Webster]

3. (Med.) An action induced by vital resistance to some other
action; depression or exhaustion of vital force consequent
on overexertion or overstimulation; heightened activity
and overaction succeeding depression or shock.
[1913 Webster]

4. (Mech.) The force which a body subjected to the action of
a force from another body exerts upon the latter body in
the opposite direction.
[1913 Webster]

Reaction is always equal and opposite to action,
that is to say, the actions of two bodies upon each
other are always equal and in opposite directions.
--Sir I.
Newton (3d Law
of Motion).
[1913 Webster]

5. (Politics) Backward tendency or movement after revolution,
reform, or great progress in any direction.
[1913 Webster]

The new king had, at the very moment at which his
fame and fortune reached the highest point,
predicted the coming reaction. --Macaulay.
[1913 Webster]

6. (Psycophysics) A regular or characteristic response to a
stimulation of the nerves.
[Webster 1913 Suppl.]

7. An action by a person or people in response to an event.
The reaction may be primarily mental (" a reaction of
surprise") but is usually manifested by some activity.
[PJC]

Reaction time (Physiol.), in nerve physiology, the interval
between the application of a stimulus to an end organ of
sense and the reaction or resulting movement; -- called
also physiological time.

Reaction wheel (Mech.), a water wheel driven by the
reaction of water, usually one in which the water,
entering it centrally, escapes at its periphery in a
direction opposed to that of its motion by orifices at
right angles, or inclined, to its radii.
[1913 Webster]
reaction wheel
(gcide)
Water wheel \Wa"ter wheel`\
1. Any wheel for propelling machinery or for other purposes,
that is made to rotate by the direct action of water; --
called an overshot wheel when the water is applied at
the top, an undershot wheel when at the bottom, a
breast wheel when at an intermediate point; other forms
are called reaction wheel, vortex wheel, {turbine
wheel}, etc.
[1913 Webster]

2. The paddle wheel of a steam vessel.
[1913 Webster]

3. A wheel for raising water; a noria, or the like.
[1913 Webster]
podobné slovodefinícia
Reaction wheel
(gcide)
Reaction \Re*ac"tion\ (r[-e]*[a^]k"sh[u^]n), n. [Cf. F.
r['e]action.]
1. Any action in resisting other action or force; counter
tendency; movement in a contrary direction; reverse
action.
[1913 Webster]

2. (Chem.) The mutual or reciprocal action of chemical agents
upon each other, or the action upon such chemical agents
of some form of energy, as heat, light, or electricity,
resulting in a chemical change in one or more of these
agents, with the production of new compounds or the
manifestation of distinctive characters. See {Blowpipe
reaction}, Flame reaction, under Blowpipe, and
Flame.
[1913 Webster]

3. (Med.) An action induced by vital resistance to some other
action; depression or exhaustion of vital force consequent
on overexertion or overstimulation; heightened activity
and overaction succeeding depression or shock.
[1913 Webster]

4. (Mech.) The force which a body subjected to the action of
a force from another body exerts upon the latter body in
the opposite direction.
[1913 Webster]

Reaction is always equal and opposite to action,
that is to say, the actions of two bodies upon each
other are always equal and in opposite directions.
--Sir I.
Newton (3d Law
of Motion).
[1913 Webster]

5. (Politics) Backward tendency or movement after revolution,
reform, or great progress in any direction.
[1913 Webster]

The new king had, at the very moment at which his
fame and fortune reached the highest point,
predicted the coming reaction. --Macaulay.
[1913 Webster]

6. (Psycophysics) A regular or characteristic response to a
stimulation of the nerves.
[Webster 1913 Suppl.]

7. An action by a person or people in response to an event.
The reaction may be primarily mental (" a reaction of
surprise") but is usually manifested by some activity.
[PJC]

Reaction time (Physiol.), in nerve physiology, the interval
between the application of a stimulus to an end organ of
sense and the reaction or resulting movement; -- called
also physiological time.

Reaction wheel (Mech.), a water wheel driven by the
reaction of water, usually one in which the water,
entering it centrally, escapes at its periphery in a
direction opposed to that of its motion by orifices at
right angles, or inclined, to its radii.
[1913 Webster]Water wheel \Wa"ter wheel`\
1. Any wheel for propelling machinery or for other purposes,
that is made to rotate by the direct action of water; --
called an overshot wheel when the water is applied at
the top, an undershot wheel when at the bottom, a
breast wheel when at an intermediate point; other forms
are called reaction wheel, vortex wheel, {turbine
wheel}, etc.
[1913 Webster]

2. The paddle wheel of a steam vessel.
[1913 Webster]

3. A wheel for raising water; a noria, or the like.
[1913 Webster]

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