Misty Mornings with 2020 vision

This is the place for posts that don't fit into any other category.

Moderator: RichardW

Post Reply
ekjdm14
(Donor 2020)
Posts: 1810
Joined: 19 Jan 2015, 17:42
Location: Congleton
Lexia Available: Yes
My Cars: '95 Xantia 1.9D automatic - 109k one of two remaining
'03 206 GTi180 - 97k in pieces being brought back up to snuff
'03 206 1.9TD - home-built veg-fuelled B-road bruiser
'99 306 SE 2.0i cabriolet - 92k awaiting service work ready for next summer
'97 306 XS 1.6i 3 door, Bianca White, from dead 12 years & seized solid to road legal in 7 days
x 212

Re: Misty Mornings with 2020 vision

Post by ekjdm14 »

My view at 8:59 this morning..... Alarm never went off so were late for school run!
Attachments
Morning.jpg
'95 Xantia LX 1.9D-auto, Black, 109k
'03 206 GTi180 94k in surgery
'03 206 1.1S XUD9TE/veg project :mrgreen:
'99 306 2.0SE cabriolet 95k summer toy
'97 306 XS 1.6i 99k sat 12 years, fixed in 7 days, 150mile maiden voyage :rofl2:
User avatar
myglaren
Forum Admin Team
Posts: 25366
Joined: 02 Mar 2008, 13:30
Location: Washington
My Cars: Mazda 6
Ooops.
Previously:
2009 Honda Civic :(
C5, C5, Xantia, BX, GS, Visa.
R4, R11TXE, R14, R30TX
x 4888

Re: Misty Mornings with 2020 vision

Post by myglaren »

Do you live in the land of eternal darkness?
User avatar
Paul-R
Donor 2023
Posts: 6916
Joined: 07 May 2009, 16:24
Location: Wirral, NW England; Vaucluse 84, France
Lexia Available: Yes
My Cars: 2015 1.6 Blue HDi 120 Peugeot 308 Active SW
2013 2.0 HDi 163 C5 Exclusive Tourer
2003 2.0 HDi 110 C5 Exclusive Estate (Gone)
2001 2.0 HDi 90 Xsara Estate (Gone)
x 1369

Re: Misty Mornings with 2020 vision

Post by Paul-R »

A black cat in a coal hole at midnight?
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
Hell Razor5543
Donor 2023
Posts: 13727
Joined: 01 Apr 2012, 09:47
Location: Reading
My Cars: C5 Mk2 VTX+ estate.
x 2993

Re: Misty Mornings with 2020 vision

Post by Hell Razor5543 »

You were looking out your window the morning before the Big Bang was due to occur?

Nope, I have got it.
Spoiler: show
A close up view of inside of the lens cap!
Last edited by Hell Razor5543 on 09 Jan 2020, 14:42, edited 1 time in total.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR

C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
User avatar
mickthemaverick
Donor 2024
Posts: 13523
Joined: 11 May 2019, 17:56
Location: Hertford
My Cars: 70+ former cars (list available) including 11 Citroens, 3 Renaults
Current cars: 2004 Subaru Legacy 2.5 SEn, 1994 Mazda MX3
x 6011

Re: Misty Mornings with 2020 vision

Post by mickthemaverick »

I reckon that's copied from my Armageddon post a few weeks ago!! :-D
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
User avatar
myglaren
Forum Admin Team
Posts: 25366
Joined: 02 Mar 2008, 13:30
Location: Washington
My Cars: Mazda 6
Ooops.
Previously:
2009 Honda Civic :(
C5, C5, Xantia, BX, GS, Visa.
R4, R11TXE, R14, R30TX
x 4888

Re: Misty Mornings with 2020 vision

Post by myglaren »

A completed one of these?
Jigsaw.jpg
Or this taken to the extreme?
EJV7sx2U4AMAlUN.jpg
ekjdm14
(Donor 2020)
Posts: 1810
Joined: 19 Jan 2015, 17:42
Location: Congleton
Lexia Available: Yes
My Cars: '95 Xantia 1.9D automatic - 109k one of two remaining
'03 206 GTi180 - 97k in pieces being brought back up to snuff
'03 206 1.9TD - home-built veg-fuelled B-road bruiser
'99 306 SE 2.0i cabriolet - 92k awaiting service work ready for next summer
'97 306 XS 1.6i 3 door, Bianca White, from dead 12 years & seized solid to road legal in 7 days
x 212

Re: Misty Mornings with 2020 vision

Post by ekjdm14 »

Haha nothing so complex, simply the back of my eyelids! :( oops, managed to get laddo to school just before half past though!
'95 Xantia LX 1.9D-auto, Black, 109k
'03 206 GTi180 94k in surgery
'03 206 1.1S XUD9TE/veg project :mrgreen:
'99 306 2.0SE cabriolet 95k summer toy
'97 306 XS 1.6i 99k sat 12 years, fixed in 7 days, 150mile maiden voyage :rofl2:
User avatar
white exec
Moderating Team
Posts: 7445
Joined: 21 Dec 2015, 12:46
Location: Sayalonga, Malaga, Spain
My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S
x 1752

Re: Misty Mornings with 2020 vision

Post by white exec »

Winched across from POTD, by request...
160.JPG
This is an evening shot from our terrace, out across Torre del Mar bay, with Gibraltar in the distance.

The maximum distance you can normally see to the horizon is 3 miles - from ground level for a 6-footer.
Up where we are (406m above sea level), you can see 24 miles.
Gibraltar is 90 miles away . . . so how can we see it? :dunno:

Usual Big Prizes for the answer


A few more...

Sea mist sweeps in
Zamorano sunset.jpg
DSCF1606.JPG
DSCF2098.JPG
And Spain from underneath...?
DSCF2148.JPG
Chris
User avatar
mickthemaverick
Donor 2024
Posts: 13523
Joined: 11 May 2019, 17:56
Location: Hertford
My Cars: 70+ former cars (list available) including 11 Citroens, 3 Renaults
Current cars: 2004 Subaru Legacy 2.5 SEn, 1994 Mazda MX3
x 6011

Re: Misty Mornings with 2020 vision

Post by mickthemaverick »

white exec wrote: 13 Jan 2020, 10:02
The maximum distance you can normally see to the horizon is 3 miles - from ground level for a 6-footer.
Up where we are (406m above sea level), you can see 24 miles.
Gibraltar is 90 miles away . . . so how can we see it? :dunno:

Usual Big Prizes for the answer
Would it be anything to do with the fact that the Rock is 426m high and the horizon distances are the distance limited by the curvature of the earth but raised objects will be visible from further away? (I can't be bothered to do the sums :-D ) :) but heres a diagram of the principle:
Own work
Own work
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
Hell Razor5543
Donor 2023
Posts: 13727
Joined: 01 Apr 2012, 09:47
Location: Reading
My Cars: C5 Mk2 VTX+ estate.
x 2993

Re: Misty Mornings with 2020 vision

Post by Hell Razor5543 »

Mirage refraction? Taking the picture from a higher than normal elevation? You are using a drone with a decent camera at a much higher altitude?
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR

C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
User avatar
white exec
Moderating Team
Posts: 7445
Joined: 21 Dec 2015, 12:46
Location: Sayalonga, Malaga, Spain
My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S
x 1752

Re: Misty Mornings with 2020 vision

Post by white exec »

Mick hits the basic geometry: go higher, and you can see further round the curve.
But that's not the reason.

Mirage? No. It's the real thing.
But on the right track.

Clue: Seeing Gib 90 miles away is only possible near sunset.
Chris
Hell Razor5543
Donor 2023
Posts: 13727
Joined: 01 Apr 2012, 09:47
Location: Reading
My Cars: C5 Mk2 VTX+ estate.
x 2993

Re: Misty Mornings with 2020 vision

Post by Hell Razor5543 »

A mirage is caused by light bending as it passes through air of differing temperatures. The clue (that it only occurs near sunset) would suggest this is likely. Does it happen more often after hot days? If it does, what could be happening is that the ground has become very hot during the day. As cooler air moves in during the evening it is warmed by the ground, allowing a refraction more parallel to the ground (a normal mirage is where the air is hotter than the ground causing a reflection of the sky to appear on the ground). If this is the case it would explain why Gibraltar can been seen when it is, in fact, too far around the horizon to be seen in normal conditions from that altitude.

If I am right then the air is, in effect, behaving like a fibre optic strand to allow the view of Gibraltar to become visible.
James
ex BX 1.9
ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
Ex C5 2.0HDi VTR
Ex C5 2.0HDi VTR

C5 2.2HDi VTX+
Yes, I am paranoid, but am I paranoid ENOUGH?
Out amongst the stars, looking for a world of my own!
User avatar
mickthemaverick
Donor 2024
Posts: 13523
Joined: 11 May 2019, 17:56
Location: Hertford
My Cars: 70+ former cars (list available) including 11 Citroens, 3 Renaults
Current cars: 2004 Subaru Legacy 2.5 SEn, 1994 Mazda MX3
x 6011

Re: Misty Mornings with 2020 vision

Post by mickthemaverick »

Does that mean it involves sunlight from a lower level in the west casting the "shadow" up into your eyeline or maybe refracting off the atmosphere?
:)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
User avatar
white exec
Moderating Team
Posts: 7445
Joined: 21 Dec 2015, 12:46
Location: Sayalonga, Malaga, Spain
My Cars: 1996 XM 2.5TD Exclusive hatch RHD
1992 BX19D Millesime hatch LHD
previously 1989 BX19RD, 1998 ZX 1.9D auto, 2001 Xantia 1.8i auto
and lots of Rovers before that: 1935 Ten, 1947 Sixteen, 1960 P5 3-litre, 1966 P6 2000, 1972 P6 2000TC, and 1975 P6B 3500S
x 1752

Re: Misty Mornings with 2020 vision

Post by white exec »

Hell Razor5543 wrote: 13 Jan 2020, 14:53 A mirage is caused by light bending as it passes through air of differing temperatures. The clue (that it only occurs near sunset) would suggest this is likely. Does it happen more often after hot days? If it does, what could be happening is that the ground has become very hot during the day. As cooler air moves in during the evening it is warmed by the ground, allowing a refraction more parallel to the ground (a normal mirage is where the air is hotter than the ground causing a reflection of the sky to appear on the ground). If this is the case it would explain why Gibraltar can been seen when it is, in fact, too far around the horizon to be seen in normal conditions from that altitude.

If I am right then the air is, in effect, behaving like a fibre optic strand to allow the view of Gibraltar to become visible.
Spot on.

As the sun goes down, the air at higher altitudes cools quickly, and is temporarily sitting on top of warmer air near the ground - the warmed ground radiates heat into the air immediately above it.

This means that the air near the ground is less dense (warmer) than the air higher up (colder), and the density graduation behaves just like a lens - it bends the light.

Rather than the "bent stick" effect seen when a pole sticks out of the surface of water, where there is a sudden change of density (at the water-air boundary), the change of density of the air at sunset (after a warm day) is a progressive one - nothing sudden - and so it bends light in a curve.

So, light emanating from Gibraltar towards the observer doesn't go off onto space in a straight line, but is curved downwards by the colder air. In that way, you can "see over the horizon".

Virtual beer tokens! :tgif: \:D/
Chris
User avatar
mickthemaverick
Donor 2024
Posts: 13523
Joined: 11 May 2019, 17:56
Location: Hertford
My Cars: 70+ former cars (list available) including 11 Citroens, 3 Renaults
Current cars: 2004 Subaru Legacy 2.5 SEn, 1994 Mazda MX3
x 6011

Re: Misty Mornings with 2020 vision

Post by mickthemaverick »

Every day's a schoolday!!! :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
Post Reply