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目录
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开始
1
水波
切换水波子部分
1.1
同心圆
1.2
高低波
切换目录
物理课程/运动/周期运动/波
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来自维基教科书,开放的书籍,开放的世界
<
物理课程
|
运动
|
周期运动
水波
[
编辑
|
编辑源代码
]
同心圆
[
编辑
|
编辑源代码
]
当鹅卵石落入水面时,同心圆会沿一个方向传播
x
2
+
y
2
=
r
2
{\displaystyle x^{2}+y^{2}=r^{2}}
T
a
n
θ
=
y
x
{\displaystyle Tan\theta ={\frac {y}{x}}}
可以表示为
y
(
θ
)
=
r
S
i
n
θ
{\displaystyle y(\theta )=rSin\theta }
x
(
θ
)
=
r
C
o
s
θ
{\displaystyle x(\theta )=rCos\theta }
高低波
[
编辑
|
编辑源代码
]
水波以正弦方式改变振幅的方向移动
y
(
t
)
=
r
S
i
n
ω
t
{\displaystyle y(t)=rSin\omega t}
ω
=
λ
t
=
λ
f
{\displaystyle \omega ={\frac {\lambda }{t}}=\lambda f}
其中
λ
{\displaystyle \lambda }
: 波长。两个波峰(最高点)之间的距离
f
{\displaystyle f}
: 频率。完成一个循环的时间频率
类别
:
书籍:物理课程
华夏公益教科书