| slovo | definícia |
negative electricity
(gcide) | Negative \Neg"a*tive\ (n[e^]g"[.a]*t[i^]v), a. [F. n['e]gatif,
L. negativus, fr. negare to deny. See Negation.]
1. Denying; implying, containing, or asserting denial,
negation or refusal; returning the answer no to an inquiry
or request; refusing assent; as, a negative answer; a
negative opinion; -- opposed to affirmative.
[1913 Webster]
If thou wilt confess,
Or else be impudently negative. --Shak.
[1913 Webster]
Denying me any power of a negative voice. --Eikon
Basilike.
[1913 Webster]
Something between an affirmative bow and a negative
shake. --Dickens.
[1913 Webster]
2. Not positive; without affirmative statement or
demonstration; indirect; consisting in the absence of
something; privative; as, a negative argument; negative
evidence; a negative morality; negative criticism.
[1913 Webster]
There in another way of denying Christ, . . . which
is negative, when we do not acknowledge and confess
him. --South.
[1913 Webster]
3. (Logic) Asserting absence of connection between a subject
and a predicate; as, a negative proposition.
[1913 Webster]
4. (Photog.) Of or pertaining to a picture upon glass or
other material, in which the lights and shades of the
original, and the relations of right and left, are
reversed.
[1913 Webster]
5. (Chem.) Metalloidal; nonmetallic; -- contrasted with
positive or basic; as, the nitro group is negative.
[1913 Webster]
Note: This word, derived from electro-negative, is now
commonly used in a more general sense, when acidiferous
is the intended signification.
[1913 Webster]
Negative crystal.
(a) A cavity in a mineral mass, having the form of a
crystal.
(b) A crystal which has the power of negative double
refraction. See refraction.
negative electricity (Elec.), the kind of electricity which
is developed upon resin or ebonite when rubbed, or which
appears at that pole of a voltaic battery which is
connected with the plate most attacked by the exciting
liquid; -- formerly called resinous electricity. Opposed
to positive electricity. Formerly, according to
Franklin's theory of a single electric fluid, negative
electricity was supposed to be electricity in a degree
below saturation, or the natural amount for a given body.
See Electricity.
Negative eyepiece. (Opt.) see under Eyepiece.
Negative quantity (Alg.), a quantity preceded by the
negative sign, or which stands in the relation indicated
by this sign to some other quantity. See Negative sign
(below).
Negative rotation, right-handed rotation. See
Right-handed, 3.
Negative sign, the sign -, or minus (opposed in
signification to +, or plus), indicating that the
quantity to which it is prefixed is to be subtracted from
the preceding quantity, or is to be reckoned from zero or
cipher in the opposite direction to that of quanties
having the sign plus either expressed or understood; thus,
in a - b, b is to be substracted from a, or regarded as
opposite to it in value; and -10[deg] on a thermometer
means 10[deg] below the zero of the scale.
[1913 Webster] |
Negative electricity
(gcide) | Electricity \E`lec*tric"i*ty\ ([=e]`l[e^]k*tr[i^]s"[i^]*t[y^]),
n.; pl. Electricities ([=e]`l[e^]k*tr[i^]s"[i^]*t[i^]z).
[Cf. F. ['e]lectricit['e]. See Electric.]
1. (Physics) a property of certain of the fundamental
particles of which matter is composed, called also
electric charge, and being of two types, designated
positive and negative; the property of electric charge on
a particle or physical body creates a force field which
affects other particles or bodies possessing electric
charge; positive charges create a repulsive force between
them, and negative charges also create a repulsive force.
A positively charged body and a negatively charged body
will create an attractive force between them. The unit of
electrical charge is the coulomb, and the intensity of
the force field at any point is measured in volts.
[PJC]
2. any of several phenomena associated with the accumulation
or movement of electrically charged particles within
material bodies, classified as static electricity and
electric current. Static electricity is often observed
in everyday life, when it causes certain materials to
cling together; when sufficient static charge is
accumulated, an electric current may pass through the air
between two charged bodies, and is observed as a visible
spark; when the spark passes from a human body to another
object it may be felt as a mild to strong painful
sensation. Electricity in the form of electric current is
put to many practical uses in electrical and electronic
devices. Lightning is also known to be a form of electric
current passing between clouds and the ground, or between
two clouds. Electric currents may produce heat, light,
concussion, and often chemical changes when passed between
objects or through any imperfectly conducting substance or
space. Accumulation of electrical charge or generation of
a voltage differnce between two parts of a complex object
may be caused by any of a variety of disturbances of
molecular equilibrium, whether from a chemical, physical,
or mechanical, cause. Electric current in metals and most
other solid coductors is carried by the movement of
electrons from one part of the metal to another. In ionic
solutions and in semiconductors, other types of movement
of charged particles may be responsible for the observed
electrical current.
[PJC]
Note: Electricity is manifested under following different
forms: (a)
Statical electricity, called also
Frictional electricity or Common electricity, electricity
in the condition of a stationary charge, in which the
disturbance is produced by friction, as of glass, amber,
etc., or by induction. (b)
Dynamical electricity, called also
Voltaic electricity, electricity in motion, or as a current
produced by chemical decomposition, as by means of a
voltaic battery, or by mechanical action, as by
dynamo-electric machines. (c)
Thermoelectricity, in which the disturbing cause is heat
(attended possibly with some chemical action). It is
developed by uniting two pieces of unlike metals in a bar,
and then heating the bar unequally. (d)
Atmospheric electricity, any condition of electrical
disturbance in the atmosphere or clouds, due to some or
all of the above mentioned causes. (e)
Magnetic electricity, electricity developed by the action
of magnets. (f)
Positive electricity, the electricity that appears at the
positive pole or anode of a battery, or that is produced
by friction of glass; -- called also {vitreous
electricity}. (g)
Negative electricity, the electricity that appears at the
negative pole or cathode, or is produced by the friction
of resinous substance; -- called also resinous
electricity. (h)
Organic electricity, that which is developed in organic
structures, either animal or vegetable, the phrase animal
electricity being much more common.
[1913 Webster]
3. The science which studies the phenomena and laws of
electricity; electrical science.
[1913 Webster]
4. Fig.: excitement, anticipation, or emotional tension,
usually caused by the occurrence or expectation of
something unusual or important. |
| | podobné slovo | definícia |
Negative electricity
(gcide) | Negative \Neg"a*tive\ (n[e^]g"[.a]*t[i^]v), a. [F. n['e]gatif,
L. negativus, fr. negare to deny. See Negation.]
1. Denying; implying, containing, or asserting denial,
negation or refusal; returning the answer no to an inquiry
or request; refusing assent; as, a negative answer; a
negative opinion; -- opposed to affirmative.
[1913 Webster]
If thou wilt confess,
Or else be impudently negative. --Shak.
[1913 Webster]
Denying me any power of a negative voice. --Eikon
Basilike.
[1913 Webster]
Something between an affirmative bow and a negative
shake. --Dickens.
[1913 Webster]
2. Not positive; without affirmative statement or
demonstration; indirect; consisting in the absence of
something; privative; as, a negative argument; negative
evidence; a negative morality; negative criticism.
[1913 Webster]
There in another way of denying Christ, . . . which
is negative, when we do not acknowledge and confess
him. --South.
[1913 Webster]
3. (Logic) Asserting absence of connection between a subject
and a predicate; as, a negative proposition.
[1913 Webster]
4. (Photog.) Of or pertaining to a picture upon glass or
other material, in which the lights and shades of the
original, and the relations of right and left, are
reversed.
[1913 Webster]
5. (Chem.) Metalloidal; nonmetallic; -- contrasted with
positive or basic; as, the nitro group is negative.
[1913 Webster]
Note: This word, derived from electro-negative, is now
commonly used in a more general sense, when acidiferous
is the intended signification.
[1913 Webster]
Negative crystal.
(a) A cavity in a mineral mass, having the form of a
crystal.
(b) A crystal which has the power of negative double
refraction. See refraction.
negative electricity (Elec.), the kind of electricity which
is developed upon resin or ebonite when rubbed, or which
appears at that pole of a voltaic battery which is
connected with the plate most attacked by the exciting
liquid; -- formerly called resinous electricity. Opposed
to positive electricity. Formerly, according to
Franklin's theory of a single electric fluid, negative
electricity was supposed to be electricity in a degree
below saturation, or the natural amount for a given body.
See Electricity.
Negative eyepiece. (Opt.) see under Eyepiece.
Negative quantity (Alg.), a quantity preceded by the
negative sign, or which stands in the relation indicated
by this sign to some other quantity. See Negative sign
(below).
Negative rotation, right-handed rotation. See
Right-handed, 3.
Negative sign, the sign -, or minus (opposed in
signification to +, or plus), indicating that the
quantity to which it is prefixed is to be subtracted from
the preceding quantity, or is to be reckoned from zero or
cipher in the opposite direction to that of quanties
having the sign plus either expressed or understood; thus,
in a - b, b is to be substracted from a, or regarded as
opposite to it in value; and -10[deg] on a thermometer
means 10[deg] below the zero of the scale.
[1913 Webster]Electricity \E`lec*tric"i*ty\ ([=e]`l[e^]k*tr[i^]s"[i^]*t[y^]),
n.; pl. Electricities ([=e]`l[e^]k*tr[i^]s"[i^]*t[i^]z).
[Cf. F. ['e]lectricit['e]. See Electric.]
1. (Physics) a property of certain of the fundamental
particles of which matter is composed, called also
electric charge, and being of two types, designated
positive and negative; the property of electric charge on
a particle or physical body creates a force field which
affects other particles or bodies possessing electric
charge; positive charges create a repulsive force between
them, and negative charges also create a repulsive force.
A positively charged body and a negatively charged body
will create an attractive force between them. The unit of
electrical charge is the coulomb, and the intensity of
the force field at any point is measured in volts.
[PJC]
2. any of several phenomena associated with the accumulation
or movement of electrically charged particles within
material bodies, classified as static electricity and
electric current. Static electricity is often observed
in everyday life, when it causes certain materials to
cling together; when sufficient static charge is
accumulated, an electric current may pass through the air
between two charged bodies, and is observed as a visible
spark; when the spark passes from a human body to another
object it may be felt as a mild to strong painful
sensation. Electricity in the form of electric current is
put to many practical uses in electrical and electronic
devices. Lightning is also known to be a form of electric
current passing between clouds and the ground, or between
two clouds. Electric currents may produce heat, light,
concussion, and often chemical changes when passed between
objects or through any imperfectly conducting substance or
space. Accumulation of electrical charge or generation of
a voltage differnce between two parts of a complex object
may be caused by any of a variety of disturbances of
molecular equilibrium, whether from a chemical, physical,
or mechanical, cause. Electric current in metals and most
other solid coductors is carried by the movement of
electrons from one part of the metal to another. In ionic
solutions and in semiconductors, other types of movement
of charged particles may be responsible for the observed
electrical current.
[PJC]
Note: Electricity is manifested under following different
forms: (a)
Statical electricity, called also
Frictional electricity or Common electricity, electricity
in the condition of a stationary charge, in which the
disturbance is produced by friction, as of glass, amber,
etc., or by induction. (b)
Dynamical electricity, called also
Voltaic electricity, electricity in motion, or as a current
produced by chemical decomposition, as by means of a
voltaic battery, or by mechanical action, as by
dynamo-electric machines. (c)
Thermoelectricity, in which the disturbing cause is heat
(attended possibly with some chemical action). It is
developed by uniting two pieces of unlike metals in a bar,
and then heating the bar unequally. (d)
Atmospheric electricity, any condition of electrical
disturbance in the atmosphere or clouds, due to some or
all of the above mentioned causes. (e)
Magnetic electricity, electricity developed by the action
of magnets. (f)
Positive electricity, the electricity that appears at the
positive pole or anode of a battery, or that is produced
by friction of glass; -- called also {vitreous
electricity}. (g)
Negative electricity, the electricity that appears at the
negative pole or cathode, or is produced by the friction
of resinous substance; -- called also resinous
electricity. (h)
Organic electricity, that which is developed in organic
structures, either animal or vegetable, the phrase animal
electricity being much more common.
[1913 Webster]
3. The science which studies the phenomena and laws of
electricity; electrical science.
[1913 Webster]
4. Fig.: excitement, anticipation, or emotional tension,
usually caused by the occurrence or expectation of
something unusual or important. |
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