sunrise and sunset

[RogerS]

I had a sense that the shift in sunrise and sunset as each day went by was not proportional and indeed, on checking, it isn't. Sunrise is three minutes earlier on Friday this week then it was on Tuesday (today) but sunset is six minutes later.

Why is this?

 

[mseries]

because the planet is not a true sphere

 

[RogerP]

because the planet is not a true sphere

Is anything planned to correct this?

 

[carlb40]

because the planet is not a true sphere

Is anything planned to correct this?

Not sure. Maybe i can get 10 million pound in funding from the government to see if it possible to correct the situation :lol:

 

[RogerS]

because the planet is not a true sphere

Ah...thanks for the quick reply. I think I understand why that affects sunrise/sunset..........

because the planet is not a true sphere

Is anything planned to correct this?

I'd start with an 80 grit

 

[mseries]

not sure I understand it 100% but I can accept that as an explanation !!

 

[mseries]

wikipaedia says this "Small daily changes and noticeable semi-annual changes in the timing of sunsets are driven by the axial tilt of Earth, daily rotation of the Earth, the planet's movement in its annual elliptical orbit around the Sun, and the Earth and Moon's paired revolutions around each other."

 

[bugbear]

because the planet is not a true sphere

Is anything planned to correct this?

You'd need a BIG lathe.

BugBear

 

[Phil Pascoe]

because the planet is not a true sphere

Is anything planned to correct this?

You'd need a BIG lathe.

BugBear

An Atlas, maybe.

 

[kinsella]

i've obviously wondered onto the comedy forum, but the 80grit gag make me laugh out loud!

 

[CHJ]

The earth also wobbles somewhat due to being out of balance, very noticeable if you step out of a tasting session at the Chase Distillery too quickly.

 

[maltrout512]

The earth also wobbles somewhat due to being out of balance, very noticeable if you step out of a tasting session at the Chase Distillery too quickly.

I'am afraid you are not right. Well not all right. I noticed a shift in the wobble long before your post and it happened as I came out of the dog and ferret. Your right about the earth with a wobble. Can you imagine all the seas swashing about here there and every where, then you have the wind to contend with and other smaller distractions like the moon, the sun and I could go on... makes you think though.

 

[DrPhill]

The path traced out in the sky by the sun is not a simpple shape but an analemma.

The best description is here : http://www.analemma.com/ (And no, that is not a **** site!)