[Prev][Next][Index][Thread]
Re: (meteorobs) observed magnitude
At the premise the light radiation is the same to different direction,the
observed magnitude should be added for the observer the meteor headed
to.But in biology, the static light arouses less stimulation to eyes or
visual cotex than the moving light, for the later stimulate more retina
neural cell. So the judgement of the mag. is different for the two
observers,but they should be right with the mark of a certain ralative
velocity.
This is what i guess. Maybe it is suggested.
At 09:45 ÏÂÎç 99-12-9 -0600, you wrote:
> A hypothetical example: Two people see the same meteor from different
>locations. The first observer sees the meteor near the radiant. Its burn
>path covers a mere 7 or 8 degrees. The second sees it cover 45 degrees
>during the same time span. both observers perceive the same magnitude or
>will the first observer consider it to be brighter? Tom
---
Best regards
Yuwei Fan
===============================
Lab for Biomaterials
Dept of Mat Sci & Eng
Tsinghua Univ
Beijing 100084
P. R. China
Tel: 86-10-6278 2966(O)
86-10-6277 4138(dorm)
Email: ywfan@mail.cic.tsinghuadot edu.cn
BP: 68471188-25990
===============================
To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at:
http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html
References: