[quote author=ahmedelshfie link=topic=2245.msg8415#msg8415 date=1312193822]
I receive E-mail from prof Wolfgang Christian about Satellite motion applet, i was already contact OSP to if may they like to post the applet that i modified in their website, i need to understand how to modified the applet to be like what Wolfgang Christian suggest, here the E-mail.
Thank you for sending me your model.
The applet is very nice and shows how to include images in EJS model. The images add a lot of realism but this realism may suggest that the scale is correct. I am worried about the incorrect scale of the satellite image relative to the Earth and the orbital radius of the satellite. Also, the axis of rotation is not the North Pole.
I need help to understand this part [quote]I am worried about the incorrect scale of the satellite image relative to the Earth and the orbital radius of the satellite. Also, the axis of rotation is not the North Pole.[/quote]
Thanks in advance
there are some physics issues with the remixed version above.
the time is not in units i can associate with .
dc/dt = 2*pi/24
assumes t is in hours
u can look at my simulation here http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2204.0 which i have made the velocity and radius of planet to scale.
the axis of rotation u need to find an image taken from the axis of rotation, instead of the north pole.
it is slightly off from the north pole.
u can try to make one from google earth.