Infra-red and Ultra Violet Frequency

  • Thread starter Thread starter 8LPF16
  • Start date Start date
  • Tags Tags
    Frequency
Click For Summary
The discussion centers on the relationship between the visible light spectrum and the invisible portions of the electromagnetic spectrum, specifically ultraviolet (UV) and infrared (IR) light. The inquiry seeks to determine if identifiable points or "colors" in the UV and IR regions correspond to the same intervals as those in the visible spectrum. It is emphasized that while our eyes perceive visible light as color, the concept of "IR colors" is misleading since color is a perceptual experience rather than a direct sensation. The conversation also touches on the Lyman series in UV and the Paschen series in IR, questioning whether the same patterns of wavelength or frequency increments that define visible colors are present in these invisible regions. The goal is to understand if the overall measurements of visible light are replicated in the UV and IR portions of the spectrum.
8LPF16
Messages
191
Reaction score
0
I am wondering if Science has determined specific frequencies for the two in-visible light areas ?

For the sake of brevity, only include the "pure" part of the band. For UV, do not include the crossover x-ray area, and for IR, do not include the crossover with the microwave band.

Assume that I know the general quantity already.
(UV = <5.01e16 , >8.01e14)
(IR = <4.01e14 , >5.01e12)

Another way of stating question: Do we see the same pattern of identifiable points (ie colors) in the UV and IR portion of the spectrum? These in-visible "colors" would be at the same intervals as the visible colors.


LPF
 
Physics news on Phys.org
The only difference between visible light and rest of the EM spectrum is that our eyes are only sensitive to visible light.

It wouldn't be a very good idea to call bands of IR "IR colors," though, because color is a perception, not a sensation. In other words, if you percieve the color yellow, it may be the result of two distinct sensations:

1) Monochromatic yellow light
2) A mixture of monochromatic red and monochromatic green light

The two situations produce the exact same perception, but are actually very different.

- Warren
 
chroot,

I appreciate your response, but I don't think we're on the same page.

I said "These in-visible "colors" would be at the same intervals as the visible colors."

By "in-visible", I'm saying "not seen",
and by putting quotations around "color", I'm saying "not really" color.

I'm looking for how far Lyman series predictions into UV will the same pattern go? (and Paschen series into IR)

The pattern is the same increments apart (between values of wavelength or frequency) that we define as separate colors.

I could also define the pattern as the total spread in value (w or f) of visible light. Is this overall measurement repeated in the IR and UV portions of the EM spectrum?


LPF
 
I'm working through something and want to make sure I understand the physics. In a system with three wave components at 120° phase separation, the total energy calculation depends on how we treat them: If coherent (add amplitudes first, then square): E = (A₁ + A₂ + A₃)² = 0 If independent (square each, then add): E = A₁² + A₂² + A₃² = 3/2 = constant In three-phase electrical systems, we treat the phases as independent — total power is sum of individual powers. In light interference...

Similar threads

  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 29 ·
Replies
29
Views
4K
  • · Replies 13 ·
Replies
13
Views
6K
Replies
15
Views
3K
Replies
1
Views
6K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K