rogerdodger
Hey, whats up Roger. There is a book "What fish see" which was written by an optometrist who apparently went from catching 3 steelhead a year to 300. It deals with the UV lighting underwater. I am gouing to purchase it soon and have a look (no pun intended). Anyone here read it? I imagine colors are not nearly as important as people think though. We, in general, tend to overthink steelhead fishing i believe.
I agree. Good to see you back! I have always enjoyed your posts and insight.good info on the relationship between lure color and light/water conditions...cheers, roger
https://www.fix.com/blog/view-from-b...es-underwater/
"Most keen anglers have a favorite lure or fly color, and swear that their choice will out-perform all other offerings. But just how important is color when it comes to lure and fly selection? Well, according to science, not very important at all!
Water progressively absorbs or blocks light of different wavelengths, meaning that colors effectively “vanish” one after another as “white” sunlight travels through the water column. The overall intensity or brightness of visible light also diminishes rapidly underwater."
Hobster, yeah, I have that book. Good info, I recommend it.
Red lures that look red at depth are florescent. Meaning they modify the spectrum of light that hits them. So (like the old black light posters) the wavelength of light that is reflected is different than the wavelength of light that hits them. Turbidity has a significant influence on which wavelengths are propagated, but red is not propagated at depth.
Propagation implies (actually, it means) that more copies of the original are made and emitted.
I think Shaun used the word correctly, 'propagation' does not require an increase in what is being propagated, it can mean just the transmission or spreading of something...here is an example of using the word in this way:
"Propagation of light refers to the manner in which electromagnetic waves transfer energy from one point to another."
or "the spreading or transmission of something <propagation of a nerve impulse>"
cheers, roger
...by "reflected" I mean "that which is not absorbed by the reflecting surface". We see objects based on the wavelengths they don't absorb.
Propagation implies (actually, it means) that more copies of the original are made and emitted. That also ain't true.
...of course, a single color cannot be "high contrast" by itself. Contrast requires more than one color, by definition.
...Turbidity can have two effects: absorption and diffusion...
...Light coming in is absorbed by what it hits, and what is not absorbed is reflected off in a different direction. Shorter wavelengths survive this better (as shown in the chart where short wavelength blues go farther than long wavelength reds), I am not sure why but I think this is related to energy which is higher for shorter wavelengths/higher frequencies...