d*l
3 楼
这已经成仙了吧
o*1
4 楼
here is a question then:
suppose you wiggle the snake at the tail. a traveling wave will then
propagate towards its head. what is the shape of the wave after it is bumped
back and has reached you? just tell me the phase of the reflecting wave: is
it 90, 180, or zero degrees from the original wave ?
at my interview, a geek asked me this question and had me to derive the
equation too...
【在 s*******a 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: 好想纠住尾巴使劲抖一下,看看会怎样。。
suppose you wiggle the snake at the tail. a traveling wave will then
propagate towards its head. what is the shape of the wave after it is bumped
back and has reached you? just tell me the phase of the reflecting wave: is
it 90, 180, or zero degrees from the original wave ?
at my interview, a geek asked me this question and had me to derive the
equation too...
【在 s*******a 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: 好想纠住尾巴使劲抖一下,看看会怎样。。
s*a
5 楼
。。。完全不懂啊。你是学物理的?
bumped
is
【在 o******1 的大作中提到】![](/moin_static193/solenoid/img/up.png)
: here is a question then:
: suppose you wiggle the snake at the tail. a traveling wave will then
: propagate towards its head. what is the shape of the wave after it is bumped
: back and has reached you? just tell me the phase of the reflecting wave: is
: it 90, 180, or zero degrees from the original wave ?
: at my interview, a geek asked me this question and had me to derive the
: equation too...
bumped
is
【在 o******1 的大作中提到】
![](/moin_static193/solenoid/img/up.png)
: here is a question then:
: suppose you wiggle the snake at the tail. a traveling wave will then
: propagate towards its head. what is the shape of the wave after it is bumped
: back and has reached you? just tell me the phase of the reflecting wave: is
: it 90, 180, or zero degrees from the original wave ?
: at my interview, a geek asked me this question and had me to derive the
: equation too...
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