Hi everibody
A friend of mine, ask me two question and I would like have your
assistance:
1 - Assume the hours equals exactly 1/24th of the earth revolution time and
suppose a disguster lover choose to retire into a cave, where daylight is
entirelly shut off for a period of six months to the minute. He carries a
watch that works to that standard and it is noon when he say goodbye to
this ungreatful world. After six months he emerges at what he thinks will
be again noon , but since the earth has acomplished a half revolution
around the sun, the cave opening is opposite relatively to the sun to what
it was six month earlier and the poor fellow has six hours to wait in the
darkness to see the sun rise again. What adjustment does his watch need?
2 - If one considers the earth relatively to the sun, it is indisputable
that the meridian opposite to the sun that corresponds to midnight is where
day X turns X+1 as the planet spins around it's axis. Now if you go
forwards and backwards relatively to that meridian, where do days X and X+1
meet?
Thanks in advance
Sergio
Sergio Doret
Nova Friburgo, RJ Brasil
22º 18'S 42º 32'W
http://www.alternex.com.br/~sdoret
