Solar time is based on what?
the position of the Sun in the sky
How many kinds of it are there?
Two
Can you name one of them?
yes
Please name one of them
apparent solar time
What's another name for that one?
sundial time
Please name the other kind of solar time?
mean solar time
Wjat's another name for that kind?
clock time
Does the sun take less time to get all the way around in September than in December?
yes
How many seconds more than 24 hours clock time can solar time be?
up to 29 seconds
How many less?
up to 21 seconds less
This is because of what?
the eccentricity of the Earth's orbit
Does that mean the Earth's orbit is a perfect circle?
no
What does it mean?
the distance between Earth and Sun varies throughout the year
Is the Earh's axis perpendicular to the plane of its orbit?
no
Is there another name for that?
yes
What is it?
obliquity of the ecliptic
The shadow of a pole in sun points in how many possible directions?
360
Does it ever dissappear?
yes
When?
when the Sun is directly overhead
Does the author like sun dials?
unknown