</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Hilandor @ Jan. 24 2002,12:46)</td></tr><tr><td id="QUOTE">for 30 years they could determine the speed of light from the sun because it takes 11 minutes for sunlight to hit earth from source, so i dont understand this mirror concept???<span id='postcolor'>
No, for 30 years (more, actually) they calculated that it takes 11 minutes for sunlight to hit earth. This is because they knew what the speed of light was, not the other way around.