Last Updated
：2025/11/22
Poynting vector
Noun
(electromagnetism)
The
vector
obtained
in
the
direction
of
a
right-hand
screw
from
the
cross
product
(vector
product)
of
the
electric
field
vector
rotated
into
the
magnetic
field
vector
of
an
electromagnetic
wave.
Note:
The
Poynting
vector,
with
transmission
media
parameters
and
constants,
gives
the
irradiance
and
direction
of
propagation
of
the
electromagnetic
wave.
Mathematically:
⃑P=⃑E⨯⃑H.
Japanese Meaning
電磁場（電場と磁場）のベクトル積から求められるベクトルで、電磁波のエネルギー伝送方向および放射照度（エネルギー流量）の大きさを示す物理量。 / 右ねじの法則に従って定まる方向を持ち、電場ベクトルを磁場ベクトルへ回転させた結果の外積として得られる。
Sense（1）
(electromagnetism)
The
vector
obtained
in
the
direction
of
a
right-hand
screw
from
the
cross
product
(vector
product)
of
the
electric
field
vector
rotated
into
the
magnetic
field
vector
of
an
electromagnetic
wave.
Note:
The
Poynting
vector,
with
transmission
media
parameters
and
constants,
gives
the
irradiance
and
direction
of
propagation
of
the
electromagnetic
wave.
Mathematically:
⃑P=⃑E⨯⃑H.
（ plural ）
Quizzes for review
(electromagnetism) The vector obtained in the direction of a right-hand screw from the cross product (vector product) of the electric field vector rotated into the magnetic field vector of an electromagnetic wave. Note: The Poynting vector, with transmission media parameters and constants, gives the irradiance and direction of propagation of the electromagnetic wave. Mathematically: ⃑P=⃑E⨯⃑H.
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See correct answer
Poynting vector
The Poynting vector points in the direction of energy flow, and its magnitude equals the irradiance of the electromagnetic wave.
See correct answer
The Poynting vector points in the direction of energy flow, and its magnitude equals the irradiance of the electromagnetic wave.
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English - English
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