thermoelectricity
n . 热电
热电
thermoelectricity n 1 :
electricity produced by heat (
as in a thermocouple )
Thermoelectricity \
Ther `
mo *
e `
lec *
tric "
i *
ty \,
n . [
Thermo -
electricity :
cf .
F .
thermo ['
e ]
lectricit ['
e ].] (
Physics )
Electricity developed in the action of heat .
See the Note under {
Electricity }.
[
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 .
安装中文字典英文字典查询工具!
中文字典英文字典工具:
复制到剪贴板
英文字典中文字典相关资料:
YouTube Help Official YouTube Help Center where you can find tips and tutorials on using YouTube and other answers to frequently asked questions
Télécharger lapplication mobile YouTube - Android - Aide YouTube Téléchargez l'application YouTube pour profiter d'une expérience de visionnage enrichie sur votre smartphone Télécharger l'application Remarque
YouTube Help - Google Help Het officiële Helpcentrum van YouTube waar u tips en handleidingen voor het gebruik van het product en andere antwoorden op veelgestelde vragen kunt vinden
Find music from artists you like - YouTube Help An Official Artist Channel , a collection of an artist’s music and videos from across all their different YouTube channels You can find an artist's Official Artist Channel (OAC) by searching for the artist on YouTube You can also find their OAC by watching an artist's official music video Learn about Official Artist Channels
Why do I have to sign in to my youtube accounts every time I want to . . . Why do I need to sign in to my youtube accounts every time I want to watch TV or youtube videos? It is very frustrating and is a waste of time and effort How do I change this?
YouTube-Hilfe - Google Help Offizielle YouTube-Hilfe, in der Sie Tipps und Lernprogramme zur Verwendung des Produkts sowie weitere Antworten auf häufig gestellte Fragen finden
Create an account on YouTube - Computer - YouTube Help Once you've signed in to YouTube with your Google Account, you can create a YouTube channel on your account YouTube channels let you upload videos, leave comments, and create playlists
YouTube帮助 您可以在 YouTube 官方帮助中心找到各种提示和辅导手册,从中了解如何使用本产品以及其他常见问题的答案。
Comunidade YouTube - Google Help Expansão do Programa de Afiliados do YouTube Shopping para mais criadores de conteúdo! 💰 Olá, criadores de conteúdo! Estamos sempre buscando maneiras de ajudar você a criar um negócio suste…
YouTube ヘルプ YouTube コミュニティで学ぶ、共有する ディスカッションに参加する YouTube ヘルプ フォーラムで、エキスパートや他のユーザーと交流しよう。 サポート。豊富な知識。技術力。 トップレベル ユーザーとは、豊富な知識を生かしてフォーラムに積極的に参加しているユーザーです。