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As Phil said, the difference between perihelion and aphelion is only ~3.4%, so that isn't the cause of the difference. The difference is due to the fact that the Sun is (a) lower in the sky now than it was in July, and (b) appears for fewer hours in the day. Both these phenomena are due to the Earth's axial tilt.
If the Sun is directly overhead (which can never happen in Wales) on a cloudless, clear day, you will get the maximum possible amount of light & heat. When the Sun reaches a maximum height of ~60 degrees above the horizon, which is what you get in June, then the amount of light and heat is only ~86% of the maximum possible. When the Sun reaches a maximum height of ~15 degrees above the horizon, which is what you get in December, then the amount of light and heat is only ~24% of the maximum possible.
The effect of having Perihelion close to the winter solstice is to slightly moderate the cold of winter in the Northern hemisphere. A similar effect, moderating the heat of summer, occurs at aphelion.
Note that the actual effects of less sun are moderated due to the gulf stream, the winds in the atmosphere, etc. etc.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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OriginalGriff wrote: how do I explain that to her? "The Earth is flat!" That should prevent any further questions.
“That which can be asserted without evidence, can be dismissed without evidence.”
― Christopher Hitchens
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Just point out that she's in Wales.
I wanna be a eunuchs developer! Pass me a bread knife!
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OriginalGriff wrote: how do I explain that to her?
Campfire on a cold night. Stand close enough so that front is warm but backside is cold. Now move forward half an inch and see if backside now gets warm.
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OriginalGriff wrote: how do I explain that to her?
"There, there, dear, don't worry your pretty little head".
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Conclusive proof that you are either
1) Single
Or
2) A UK Conservative Prime Minister.
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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very cool indeed.
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I don’t think the average person, myself included, can ever fully understand the magnitude of this accomplishment. In fact, the quantities involved are so far beyond the human experience, I suspect even the mission scientists and engineers struggle to truly visualize them.
First, consider the distance. Assume you wanted to emulate this trip. So, you decide to continually fly round-trip from New York to Sydney, until you equal the distance. Bad news here. It would take over 200,000 round-trip flights. Assuming you fly one leg of this round-trip, every single day, you would be flying for a bit over a thousand years.
The good news is that, if you’re willing to wait that long, you’ll save a bit on the trip. At around $200M for the commercial flights, you’d beat the $700M price tag for New Horizons
Next, consider the navigation. Imagine you fire a bullet moving about 20 times as fast as the average rifle round. Your target is a different fast-moving bullet. Finally, make the problem a bit more difficult by requiring that you ricochet off two other fast-moving bullets on the way. Oh, and don’t forget that distance we talked about earlier. Simple right?
Then, consider the engineering. You decide to build a contraption that can accomplish almost all of these goals. Though, at that point you’re “only” aiming at that second bullet. You haven’t decided you’ll ricochet off of it yet.
So, you plan and lobby, lobby and plan…for a couple of decades. Then, you get permission (and funding) to actually build the thing. A few years later its built and launched. Yeah! Success, right?
Nope, you get to wait, and watch it travel, and wait…for an additional decade. Along the way, you decide that second ricochet would be really cool! You even find another bullet to hit. Finally, decades later, if you’ve got the patience, and are still around, you get to enjoy the payoff.
All done right? Maybe. They’re talking about another ricochet and another bullet
Personally, I am in awe of this accomplishment. And, more, as an engineer myself, the patience it must require to begin a project that might not be completed until after you’re gone.
Kudos, NASA! Home run on this one!
Now, can we talk about that Lunar Orbital Platform-Gateway? Are you sure about it? Can I talk you out of it, please?
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Bull! Why stupid person? It's a contradiction. (8)
This space for rent
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Nice easy one to start the year!
OXYMORON
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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We have a winner (obviously)
This space for rent
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Pete O'Hanlon wrote: Bull! Why stupid person? It's a contradiction. (8)
Is it SCROTUMS?
Michael Martin
Australia
"I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible."
- Mr.Prakash One Fine Saturday. 24/04/2004
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Spot cream for Piers.
veni bibi saltavi
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Over 24 hours late now...
@walterhevedeich
If it doesn't get posted by 13:00 UTC today, I'll reboot it tomorrow...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Latest addition to family have just discovered the joys of my desk. In addition to detecting their presence on the keyboard it would also help if it could detect which monitor they have decided to look at and automatically transfer my work window to a vacant monitor.
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Here you go,[^]
I wanna be a eunuchs developer! Pass me a bread knife!
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Already have three of those, different breed admittedly. They now cower in fear as kittens approach!
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There's an app[^] for that...
Anything that is unrelated to elephants is irrelephant Anonymous
- The problem with quotes on the internet is that you can never tell if they're genuine Winston Churchill, 1944
- Never argue with a fool. Onlookers may not be able to tell the difference. Mark Twain
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Um ...
Quote: We make our software easier to use with a manual that you can view two different ways: you can view it on your computer, and you can print it. So ... that's a PDF file, then?
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Purrhaps...
Anything that is unrelated to elephants is irrelephant Anonymous
- The problem with quotes on the internet is that you can never tell if they're genuine Winston Churchill, 1944
- Never argue with a fool. Onlookers may not be able to tell the difference. Mark Twain
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Meowbe so...
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Pictures or it didn't happen!
They seem to have a natural affinity for keyboards, and can type - in cat - faster than I can type - in English - from an early age. I suspect the tail helps here, though ours seems to type exclusively with his butt.
Here is ours a few months after we got him, doing his best to prevent any form of input: Dropbox[^]
Sent from my Amstrad PC 1640
Never throw anything away, Griff
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Hi All,
Just wishing you all a Happy New Year! May it be a good one.
Glenn
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Happy New Year to you as well Glenn.
I may not be that good looking, or athletic, or funny, or talented, or smart
I forgot where I was going with this but I do know I love bacon!
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