rainbow

A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.
Rainbows can be full circles; however, the average observer sees only an arc formed by illuminated droplets above the ground, and centred on a line from the sun to the observer's eye.
In a primary rainbow, the arc shows red on the outer part and violet on the inner side. This rainbow is caused by light being refracted when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
In a double rainbow, a second arc is seen outside the primary arc, and has the order of its colours reversed, with red on the inner side of the arc.

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  1. gava

    The pot of gold at the end of the rainbow

    It is often said that the ultimate aim of the HiFi or Audiophile experience something like: "To recreate the live experience" "To hear the music as the artist intended" "To sound like the original performance" I'm really not sure this makes any sense... 1. Most of the music we listen to is...
  2. A

    Benq HT 3550/W2700 right top corner Rainbow halo-ing

    Hello everyone, My mancave/ theater was under going some maintenance (new paint job) hence I packed everything away and now when the paint job is done I connected and fired up my projector only to notice something I had never seen before is the noticeable (in the bright scenes) a rainbow sort of...
  3. zt1903

    Rainbow Six Extraction (Jan 2022)

    https://blog.playstation.com/2021/09/09/welcome-to-the-world-of-tom-clancys-rainbow-six-extraction/
  4. archie2000

    Is Rainbow effect still as prevalent on DLP Projectors?

    When I was looking for my first projector around 5 years ago, I viewed a DLP full HD projector and noticed the rainbow effect in a few scenes of the demo film. Due to this, I only really had the option to buy an Epson 3LCD projector, which was the EH-TW6100. This has been a brilliant projector...
  5. S

    Xgimi Z6 or LG 450ug Budget projector advice

    Hi All, I want a small projector with a great picture. I have a budget of c. £500. I made the mistake of buying the LG 150g - the pic is horrible. I see the Xgimi z6 is full HD - but can I trust the brand? The LG 450ug is 720p - but is the upscaling good? I see clips comparing it to the LG...
  6. slannmage

    Do all DLP Projectors suffer from the Rainbow Effect?

    I bought an Optoma HD142X or something? It was highly recommended on Amazon, but I could see it flashing colours.... I have a 3LCD Projector but the Blacks are so grey like a 10 year old LCD. Is there any good Projector out there that isn't too expensive? I'm thinking of just getting a 65 inch...
  7. wiildchild

    Question Samsung Smart tv bootloop Series 8 with screen rainbow

    This what happens to my UE40ES80000 ! It happens after some working time , and when it happens; TV needs to stay off for while ( No, it's not getting hot when in use ). It's a hardware failure so any one have idea what's really happening and which part to change !
  8. wiildchild

    Samsung Smart tv bootloop Series 8 with screen rainbow

    This what happens to my UE40ES80000 ! It happens after some working time , and when it happens; TV needs to stay off for while ( No, it's not getting hot when in use ). It's a hardware failure so any one have idea what's really happening and which part to change !
  9. Paranormalist

    Rainbow

    A rainbow appeared after a thunder storm had cleared on Friday evening. I was able to capture this through an open window and grab my camera before it disappeared. EXIF Sony a7rii f/8 1/80s ISO 320 63mm PP Basic Raw Adjustments Colour & Contrast Adjustment Sky Grad Straighten & Crop Sharpen
  10. Sounduser

    Question The rainbow.......

    So I got an Acer h6510bd projector from ebay for £195. Good condition, over 1000h bulb count. Im wondering how to minamise the rainbow..... It doesn't make me feel sick or anything. But some times it quite noticable I first connected it with a vga cable to the kids pc and watched some random...
  11. U

    Question Rainbow Amps, any good?

    Still looking for an amp. Still don't have a clue what's good and what isn't. Everything in the car audio market seems to be focused on 19yr olds in hot hatches and so is rather short on meaningful specs or analysis. I turned up a brand that I think is German, Rainbow. They seem to have 3...
  12. raigraphixs

    Tom Clancy's Rainbow Six (TBC) Chad Stahelski directs

    Rumour that Ryan Reynolds is being lined up to take the lead, in a film adaptation of Tom Clancy’s Rainbow Six. Deadline has reported that “loose talks” have commenced with the Deadpool actor to play Clancy’s Mercenary Hero Ex-Navy Seal, John Clark – In the novel, Clark, becomes head of an...
  13. bookle

    Question Optoma HD200x / HD20 Upgrade with no rainbow effect?

    I have had my Optoma HD200x (same as more common Optoma HD20) for a few months now on my first projector setup and absolutely love it! But... I realise now I am very sensitive to the rainbow effect that this projector is known to have. What else can I buy at around same price point (used)...
  14. nheather

    Double Data - Rainbow - Three Advert

    Anyone else finding that the annoying 'double data, rainbow, three' advert that is being inserted all over AVF is killing the page download. Mines really sluggish and it seems to be down to that blessed advert. Cheers, Nigel
  15. Q

    Samsung - black screen - started with picture + vertical rainbow lines

    Hi guys, So I got a hand me down 40" LCD Samsung tv. They knew I like to fix things - I usually successfully do so. I'm perplexed as to how progress has changed the issue. Upon turning the tv on it came on with the typical no signal image but swiftly so did a strip of vertical lines. I new...
  16. Jamesyy

    Question HD141X - Rainbow Effect .. normal?

    Evening AV Experts, Recently purchased the Optoma HD141X. Projecting 90" with minimal zoom. I've been noticing some annoying "rainbow effect" flashing in small areas around dark/contrasty scenes. I know it's because of the scenes going fast from light to dark or vice versa and the HD141X only...
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