Questions...Ask

[eelman]

This is the Question thread...Ask anything you want and it will be given the respect and dignity it deserves...Anything is a go, exept the following question


"Why is the sky blue"

[OffTheHook13]

Too much time..............................

[fishaholic18]

Why do some moderators shut posts down just when the fun is starting?

[fishaholic18]

Originally Posted by OffTheHook13

Too much time..............................

Yet you have enough time to reply to them all...Why is this?

[OffTheHook13]

Originally Posted by fishaholic18

Yet you have enough time to reply to them all...Why is this?

Yep, I sure do.

[The Dad Fisherman]

Why is the sky blue?
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

The white light from the sun is a mixture of all colours of the rainbow. This was demonstrated by Isaac Newton, who used a prism to separate the different colours and so form a spectrum. The colours of light are distinguished by their different wavelengths. The visible part of the spectrum ranges from red light with a wavelength of about 720 nm, to violet with a wavelength of about 380 nm, with orange, yellow, green, blue and indigo between. The three different types of colour receptors in the retina of the human eye respond most strongly to red, green and blue wavelengths, giving us our colour vision.

Tyndall Effect
The first steps towards correctly explaining the colour of the sky were taken by John Tyndall in 1859. He discovered that when light passes through a clear fluid holding small particles in suspension, the shorter blue wavelengths are scattered more strongly than the red. This can be demonstrated by shining a beam of white light through a tank of water with a little milk or soap mixed in. From the side, the beam can be seen by the blue light it scatters; but the light seen directly from the end is reddened after it has passed through the tank. The scattered light can also be shown to be polarised using a filter of polarised light, just as the sky appears a deeper blue through polaroid sun glasses.

This is most correctly called the Tyndall effect, but it is more commonly known to physicists as Rayleigh scattering--after Lord Rayleigh, who studied it in more detail a few years later. He showed that the amount of light scattered is inversely proportional to the fourth power of wavelength for sufficiently small particles. It follows that blue light is scattered more than red light by a factor of (700/400)4 ~= 10.

Dust or Molecules?
Tyndall and Rayleigh thought that the blue colour of the sky must be due to small particles of dust and droplets of water vapour in the atmosphere. Even today, people sometimes incorrectly say that this is the case. Later scientists realised that if this were true, there would be more variation of sky colour with humidity or haze conditions than was actually observed, so they supposed correctly that the molecules of oxygen and nitrogen in the air are sufficient to account for the scattering. The case was finally settled by Einstein in 1911, who calculated the detailed formula for the scattering of light from molecules; and this was found to be in agreement with experiment. He was even able to use the calculation as a further verification of Avogadro's number when compared with observation. The molecules are able to scatter light because the electromagnetic field of the light waves induces electric dipole moments in the molecules.

Why not violet?
If shorter wavelengths are scattered most strongly, then there is a puzzle as to why the sky does not appear violet, the colour with the shortest visible wavelength. The spectrum of light emission from the sun is not constant at all wavelengths, and additionally is absorbed by the high atmosphere, so there is less violet in the light. Our eyes are also less sensitive to violet. That's part of the answer; yet a rainbow shows that there remains a significant amount of visible light coloured indigo and violet beyond the blue. The rest of the answer to this puzzle lies in the way our vision works. We have three types of colour receptors, or cones, in our retina. They are called red, blue and green because they respond most strongly to light at those wavelengths. As they are stimulated in different proportions, our visual system constructs the colours we see.

When we look up at the sky, the red cones respond to the small amount of scattered red light, but also less strongly to orange and yellow wavelengths. The green cones respond to yellow and the more strongly-scattered green and green-blue wavelengths. The blue cones are stimulated by colours near blue wavelengths which are very strongly scattered. If there were no indigo and violet in the spectrum, the sky would appear blue with a slight green tinge. However, the most strongly scattered indigo and violet wavelengths stimulate the red cones slightly as well as the blue, which is why these colours appear blue with an added red tinge. The net effect is that the red and green cones are stimulated about equally by the light from the sky, while the blue is stimulated more strongly. This combination accounts for the pale sky blue colour. It may not be a coincidence that our vision is adjusted to see the sky as a pure hue. We have evolved to fit in with our environment; and the ability to separate natural colours most clearly is probably a survival advantage.

Sunsets
When the air is clear the sunset will appear yellow, because the light from the sun has passed a long distance through air and some of the blue light has been scattered away. If the air is polluted with small particles, natural or otherwise, the sunset will be more red. Sunsets over the sea may also be orange, due to salt particles in the air, which are effective Tyndall scatterers. The sky around the sun is seen reddened, as well as the light coming directly from the sun. This is because all light is scattered relatively well through small angles--but blue light is then more likely to be scattered twice or more over the greater distances, leaving the yellow, red and orange colours.

Blue Haze and Blue Moon
Clouds and dust haze appear white because they consist of particles larger than the wavelengths of light, which scatter all wavelengths equally (Mie scattering). But sometimes there might be other particles in the air that are much smaller. Some mountainous regions are famous for their blue haze. Aerosols of terpenes from the vegetation react with ozone in the atmosphere to form small particles about 200 nm across, and these particles scatter the blue light. A forest fire or volcanic eruption may occasionally fill the atmosphere with fine particles of 500-800 nm across, being the right size to scatter red light. This gives the opposite to the usual Tyndall effect, and may cause the moon to have a blue tinge since the red light has been scattered out. This is a very rare phenomenon--occurring literally once in a blue moon.

Opalescence
The Tyndall effect is responsible for some other blue coloration's in nature: such as blue eyes, the opalescence of some gem stones, and the colour in the blue jay's wing. The colours can vary according to the size of the scattering particles. When a fluid is near its critical temperature and pressure, tiny density fluctuations are responsible for a blue coloration known as critical opalescence. People have also copied these natural effects by making ornamental glasses impregnated with particles, to give the glass a blue sheen. But not all blue colouring in nature is caused by scattering. Light under the sea is blue because water absorbs longer wavelength of light through distances over about 20 metres. When viewed from the beach, the sea is also blue because it reflects the sky, of course. Some birds and butterflies get their blue colorations by diffraction effects.

Why is the Mars sky red?
Images sent back from the Viking Mars landers in 1977 and from Pathfinder in 1997 showed a red sky seen from the Martian surface. This was due to red iron-rich dusts thrown up in the dust storms occurring from time to time on Mars. The colour of the Mars sky will change according to weather conditions. It should be blue when there have been no recent storms, but it will be darker than the earth's daytime sky because of Mars' thinner atmosphere.

[Flaptail]

Do fish feel pain?

[OffTheHook13]

I like to add fuel.

[eelman]

I am highly impressed Dad fisherman! Your right you can answer anything on the internet!

Ok ..Where do babies come from??

[fishbones]

Originally Posted by #^&#^&#^&#^&#^&#^&

This is the Question thread...Ask anything you want and it will be given the respect and dignity it deserves...Anything is a go, exept the following question


"Why is the sky blue"

How can I better understand women?

[The Dad Fisherman]

1/2 a bottle of Scotch

[OffTheHook13]

Originally Posted by Flaptail

Do fish feel pain?

Stab one in the eyesocket and let us know

[The Dad Fisherman]

Wow that answer worked for both questions

[OffTheHook13]

Who's gonna win the presidential election?

[eelman]

Originally Posted by Flaptail

Do fish feel pain?

Acually Steve, Capt, All Andreson did extensive research into this along with students and faculty at URI marine labs and they determined that fish do not feel pain as we know it, they do not have the recepters in there nerves that tell there brains they are in pain...So from what I have read and heard the answer is no

[OffTheHook13]

Originally Posted by The Dad Fisherman

Wow that answer worked for both questions

LOL

[eelman]

Originally Posted by fishbones

How can I better understand women?

The only way is to marry one and you will learn fast

[eelman]

Is there an afterlife?

[OffTheHook13]

Or date one of these freaks.

[OffTheHook13]

Originally Posted by #^&#^&#^&#^&#^&#^&

Is there an afterlife?

Afterbirth

[fishbones]

Originally Posted by #^&#^&#^&#^&#^&#^&

The only way is to marry one and you will learn fast

I knew everything about women before I got married, and over the last 6 years I've become a compete idiot when it comes to them.

I like TDF's answer. The 1/2 bottle of scotch may not really make me any smarter, but it will sure as heck make me not care that I'm stupid.

[ThrowingTimber]

Originally Posted by Flaptail

Do fish feel pain?

NO they dont neither do lobsters or cows.. neither does lettuce or tomatoes

[piemma]

So I have a question right along with a lot of the other guys who danced around it. What happened to going out and just doing it?When I started in the surf, there was no internet. You learned by hanging around the B & Ts and listening. God forbid you asked a question as the old timers would run you out of the place. better yet, they would give you the wrong answer and then watch you make a damn fool of yourself.

I don't have a problem with questions, just stupid questions. if someone wants to know how to tie a dropper loop, fine, that's a tough knot to tie correctly and not something you will find easily.

When they start asking what rod to buy and what reel to put on it, I respectfully submit that they should do some research on their own. Those questions have been answered 100 time.

Yes, the Board is hear to share knowledge but there is also a line where the majority of the population is not being served by the questions asked by a few. Just my opinion.

[ThrowingTimber]

Originally Posted by #^&#^&#^&#^&#^&#^&

Is there an afterlife?

Yes its the foxy

[piemma]

Hi Vic

[ThrowingTimber]

Originally Posted by piemma

When they start asking what rod to buy and what reel to put on it, I respectfully submit that they should do some research on their own. Those questions have been answered 100 time.

Yes, the Board is hear to share knowledge but there is also a line where the majority of the population is not being served by the questions asked by a few. Just my opinion.

I totally agree with you.

The option to place said individuals on Ignore is also an option. You wont believe how long my ignore list is... not here but other places.

that being said, give the dude some time I'm sure he'll wind down and find the search button.

[RIJIMMY]

Originally Posted by piemma

So I have a question right along with a lot of the other guys who danced around it. What happened to going out and just doing it?When I started in the surf, there was no internet. You learned by hanging around the B & Ts and listening. God forbid you asked a question as the old timers would run you out of the place. better yet, they would give you the wrong answer and then watch you make a damn fool of yourself.

I don't have a problem with questions, just stupid questions. if someone wants to know how to tie a dropper loop, fine, that's a tough knot to tie correctly and not something you will find easily.

When they start asking what rod to buy and what reel to put on it, I respectfully submit that they should do some research on their own. Those questions have been answered 100 time.

Yes, the Board is hear to share knowledge but there is also a line where the majority of the population is not being served by the questions asked by a few. Just my opinion.

Paul, I think an honest answer is that "we" the community of people who fish serioulsy have made this whole thing way more complicated than it needs to be. I've been surf fishing since I was 7 or 8, I fished Ctown, Quonny, Race Point etc with a bag of plugs, a Quick reel and an off the shelf rod. Luckily I had a Dad who had gear and knowledge and I followed him, but back then, 30 years ago, I never heard of Van Staal, Aquaskins, $240 pliers, beathable waders, etc.
We fished with our plugs in a good ole white bucket, and wore $5 rain jackets, 3 rebels and a few jigs. Now look at all the choices a newbie has? I wouldnt no where to start! If you go with all the options it would cost you $3500 just to get the basic equipment. There is too much bs. That doesnt explain dumb questions, but I think information overload is a factor!

[eelman]

Originally Posted by piemma

So I have a question right along with a lot of the other guys who danced around it. What happened to going out and just doing it?When I started in the surf, there was no internet. You learned by hanging around the B & Ts and listening. God forbid you asked a question as the old timers would run you out of the place. better yet, they would give you the wrong answer and then watch you make a damn fool of yourself.

I don't have a problem with questions, just stupid questions. if someone wants to know how to tie a dropper loop, fine, that's a tough knot to tie correctly and not something you will find easily.

When they start asking what rod to buy and what reel to put on it, I respectfully submit that they should do some research on their own. Those questions have been answered 100 time.

Yes, the Board is hear to share knowledge but there is also a line where the majority of the population is not being served by the questions asked by a few. Just my opinion.

Be carefull, I just got hung for saying the same thing basically! However, good post paul

[piemma]

Originally Posted by RIJIMMY

Paul, I think an honest answer is that "we" the community of people who fish serioulsy have made this whole thing way more complicated than it needs to be. I've been surf fishing since I was 7 or 8, I fished Ctown, Quonny, Race Point etc with a bag of plugs, a Quick reel and an off the shelf rod. Luckily I had a Dad who had gear and knowledge and I followed him, but back then, 30 years ago, I never heard of Van Staal, Aquaskins, $240 pliers, beathable waders, etc.
We fished with our plugs in a good ole white bucket, and wore $5 rain jackets, 3 rebels and a few jigs. Now look at all the choices a newbie has? I wouldnt no where to start! If you go with all the options it would cost you $3500 just to get the basic equipment. There is too much bs. That doesnt explain dumb questions, but I think information overload is a factor!

Well, Jimmy, that a good point. I started like you did. White bucket a set of rubber waders from Bennys and a $5 rain jacket. You had white leadheads jigs and maybe an Atom Popper and a Rebel.

I am not criticizing the questions. Just as Bill said, you can do the searches and find out the basics to start with. I don't have a problem with questions that are thoughtful and not easily solved. It's the redundent, "what line should I use" questions that I take exception to.

Do you see where I am coming from?

[eelman]

Originally Posted by RIJIMMY

Paul, I think an honest answer is that "we" the community of people who fish serioulsy have made this whole thing way more complicated than it needs to be. I've been surf fishing since I was 7 or 8, I fished Ctown, Quonny, Race Point etc with a bag of plugs, a Quick reel and an off the shelf rod. Luckily I had a Dad who had gear and knowledge and I followed him, but back then, 30 years ago, I never heard of Van Staal, Aquaskins, $240 pliers, beathable waders, etc.
We fished with our plugs in a good ole white bucket, and wore $5 rain jackets, 3 rebels and a few jigs. Now look at all the choices a newbie has? I wouldnt no where to start! If you go with all the options it would cost you $3500 just to get the basic equipment. There is too much bs. That doesnt explain dumb questions, but I think information overload is a factor!

They have made it that way because thats what they like...

I have seen the guys you talk about...Many times, they look like idiots...Dressed to the nines with every brand name everything, spent thousands before they caught there first fish or think they fish better because somone else tells them to buy this wetsuit , wear a belt full of boga grips, pliers, hand held radios, red necklights etc, vs reels, portable borometers etc...they look like fools out of ice station zebra! They are at total war with fish! he men who have the latest and greatest of what they were told to buy! yet they have no clue what the wind is doing...oops, Forgot that one!

Then the guy walks off the beach in hip boots and grundens hauling a 40 over his shoulder! Its hilarious..

These guys dont even want to touch a fish anymore! Now a boga grip is the way to land a fish! They do all of this mind you to match wits with an animal that has a brain the size of a pin head..and all that lame gear is needed to partake in this battle of real men. They exole themselves of how "hard" they fished all night to land that bass....how reaching for the boga almost had them lose ballance while they waded out 6 million yards to climb up on a rock like a baffoon to master the beast..(buying a boat is smarter in this case and can acually prolong life, but thats another story)

here is whats next...Soon there will be another gadget for there lame looking belts full of all that useless gear...It will be a med kit for fish...It will have anit-biotic shots to give the fish to treat a host of illness's they may have, they may contain narcotics to lesson the pain and suffering they caused on the fish along with this portable oxygen to get there fish back in good shape...

When you meet these people they walk around like they are holding this huge secret and you cant dare ask where they caught there large bass....Gimmie a break, as for me I could give a good cheet where anyone catches, let alone some wet behind the ears kid thinking he has pulled the wool over the eyes of a guy who has done it a million times...They dont talk, they just smirk, the whispers begin, "hey did you hear how good those guys did those two weeks in August" wow there sharpies..They have all that gear you know, they know what there doing...

Fishing is not that complicated...its all a matter of putting in the time