Difference between revisions of "Electromagnetic Spectrum/meta"

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The T5 Ruleset inadvertently made an error in the assignment of nanometer wavelengths to the Infra-Red Ranges on the Sight Sense Table.  Apparently, someone mistook 1000nm for 1000μm, and the "Far Infra-Red" Range downward is off by a factor of 1000 or more.  I have made an attempt at a suggested errata-corrected table below for those interested in correct values.   
 
The T5 Ruleset inadvertently made an error in the assignment of nanometer wavelengths to the Infra-Red Ranges on the Sight Sense Table.  Apparently, someone mistook 1000nm for 1000μm, and the "Far Infra-Red" Range downward is off by a factor of 1000 or more.  I have made an attempt at a suggested errata-corrected table below for those interested in correct values.   
  
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* --[[User:WHULorigan|WHULorigan]] ([[User talk:WHULorigan|talk]]) 22:14, 31 March 2025 (UTC)
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* '''OPTION #1''': Keep the chart ''as is'', but in the '''Extended Color Name''' column in all cases I have changed character string ''"'''Infrared'''"'' to ''"'''Near-Infrared'''"'' (and Code ''"'''IR'''"'' or ''"'''Ir'''"'' or ''"'''ir'''"'' to ==> ''"'''NIR'''"''). 
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* '''OPTION #2''': Keep the ''Range Names'' in the '''Extended Color Name''' column from the Published Charts as is, but move the titles to their proper ACTUAL nanometer ranges. Note that for this option I tried to keep the Infrared letter-codes in the '''T5 Code''' column lined up as much as possible with the existing ''published'' '''T5 Names''' and '''Extended Color Names''' in their respective columns, and thus they have been "stretched" downwards over a greater range, with new Letter-codes and Extended Color Names filling in the gaps in between.
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* '''OPTION #3''': In the '''Alt Code''' Column I have suggested a different Infrared Code scheme based on the Letter-designations of the '''''actual Astronomical Infrared Range Band Letters''''', which fortuitously all match up with either unused T5 Code letters (save one) or use T5 Code letters already in the Infrared Range that can be reassigned/readjusted. (And the one that is already in-use/unavailable is in a dual-band double-letter range where we can use the other letter).
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:* --[[User:WHULorigan|WHULorigan]] ([[User talk:WHULorigan|talk]]) 22:14, 31 March 2025 (UTC)
  
 
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{{Sources
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|S1= [[wikipedia: Electromagnetic Spectrum]]
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|S2= [[wikipedia: Photometric_system#Photometric_letters]]
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|S3= [[wikipedia: Ultraviolet]]
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|S4= [[wikipedia: Infrared]]
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|S5= [[wikipedia: Radio frequency]]
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|S6= [[wikipedia: Radio spectrum]]
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|S7= Contributor: [[WHULorigan]]
 +
}}

Latest revision as of 23:38, 3 April 2025

Note Regarding Infra-Red Range of the Optical Spectrum[edit]

The T5 Ruleset inadvertently made an error in the assignment of nanometer wavelengths to the Infra-Red Ranges on the Sight Sense Table. Apparently, someone mistook 1000nm for 1000μm, and the "Far Infra-Red" Range downward is off by a factor of 1000 or more. I have made an attempt at a suggested errata-corrected table below for those interested in correct values.

  • OPTION #1: Keep the chart as is, but in the Extended Color Name column in all cases I have changed character string "Infrared" to "Near-Infrared" (and Code "IR" or "Ir" or "ir" to ==> "NIR").
  • OPTION #2: Keep the Range Names in the Extended Color Name column from the Published Charts as is, but move the titles to their proper ACTUAL nanometer ranges. Note that for this option I tried to keep the Infrared letter-codes in the T5 Code column lined up as much as possible with the existing published T5 Names and Extended Color Names in their respective columns, and thus they have been "stretched" downwards over a greater range, with new Letter-codes and Extended Color Names filling in the gaps in between.
  • OPTION #3: In the Alt Code Column I have suggested a different Infrared Code scheme based on the Letter-designations of the actual Astronomical Infrared Range Band Letters, which fortuitously all match up with either unused T5 Code letters (save one) or use T5 Code letters already in the Infrared Range that can be reassigned/readjusted. (And the one that is already in-use/unavailable is in a dual-band double-letter range where we can use the other letter).



THE ELECTROMAGNETIC SPECTRUM -
Optical Range

Wavelength (nm) T5
Code 		Alt
Code 		T5
Name 		Extended
Color Name 		Standard Physics Range Band ADDITIONAL NOTES
============= ==== ==== ========= ================= ====================================== ===========================================
30 V X (?) VHardUV Very Hard Ultra-Violet Beyond Extreme Ultra-Violet (10nm - 50nm) ( < 10nm ==> Soft X-Rays )
100 H HardUV Hard Ultra-Violet Extreme Ultra-Violet (50nm - 120nm)
170 D DarkUV Dark Ultra-Violet Far Ultra-Violet (121nm - 200nm) Color: UVC2 (Dark UV) - Shortwave UV: 120nm - 200nm
240 U UV Ultra-Violet Middle Ultra-Violet (200nm - 300nm) Color: UVC1 (Light UV) - Shortwave UV: 200nm - 280nm
310 SA/SB Sparkle Near Ultra-Violet Near Ultra-Violet (300nm - 400nm) ┌ Color: UVB (Sparkle) - Mediumwave UV: 280nm - 315nm
└ Color: UVA (Blacklight) - Longwave UV : 315nm - 400nm - (Visible to Birds / Insects / Fish)
============= ==== ==== ========= ================= ====================================== ===========================================
380 P Purple Human Visible Violet Violet Color: Violet: 380nm - 420nm / Color: Indigo: 420nm - 450nm
450 B Blue Human Visible Blue Blue Color: Blue: 450nm - 485nm / Color: Cyan: 485nm - 500nm
540 G Green Human Visible Green Green Color: Green: 500nm - 565nm / Color: Yellow: 565nm - 590nm
610 R Red Human Visible Red (Orange) Red Color: Orange-Red: 590nm - 625nm
680 C Cerise Human Visible Cerise Cherry Red Color: Red / Cherry-Red: 625nm - 750nm
============= ==== ==== ========= ================= ====================================== ===========================================
-- Near Infrared Region --
750 A A Aglow Edge of Near-Infrared Edge of Near-IR Color: Dark Red-Black 750 nm - 780 nm
· ·»» ===> 750 nm /Formerly T5 "(A / Aglow) - Edge of Infrared"
820 EI I NearNIR
(EdgeNIR / ENIR) 		"Near" Near-Infrared Near-IR
└ "I-Band" ~800 nm 		Color: Infrared-I
· ·»» ===> 820 nm /Formerly T5 "(N / NearIR) - Near Infrared"
890 NZ Z NIR / NearIR Near-Infrared Near-IR
└ "Z-Band" ~900 nm 		Color: Infrared-Z
· ·»» ===> 890 nm /Formerly T5 "(I / IR) - Infrared"
1 000 WY / WJ Y / J FarNIR / IR-A "Far" Near-Infrared Near-IR / (IR-A)
└ "Y-Band" (~1020 nm)
└ "J-Band" (~1220 nm) 		Color:
┌ Color: Infrared-Y
└ Color: Infrared-J
· · » Water Absorption Spectra (3 lines: 970nm, 1250nm, 1450nm)
· · »» ===> 1000 nm /Formerly T5 "(F / FarIR) - Far Infrared" (Incorrect - See Below)
-- Mid-Infrared Region --
2 000 IH / IK K XNIR / IR-B
(SwIR) 		"Extreme" Near-Infrared /
Shortwavelength
Infrared 		Shortwave-IR / (IR-B)
└ "H-Band" (~1630 nm)
└ "K-Band" (~2190 nm) 		Color:
┌ Color: Infrared-H
└ Color: Infrared-K
· · »» ===> 2000 nm /Formerly T5 "(X / XIR) - Extreme Infrared" (Incorrect - See Below)
4 000 ML / M L / M ZNIR / IR-C
(MIR / IIR)
(MwIR) 		Beyond
("Extreme-") Near-Infrared /
Midwavelegth
Infrared 		Intermediate-IR (IIR) / (IR-C)
└ Midwave-IR (Mid-IR) - "L-Band" (~3450 nm)
└ Midwave-IR (Mid-IR) - "M-Band" (~4750 nm) 		Color:
┌ Color: Infrared-L
└ Color: Infrared-M
· · »» Thermal Infrared (Imaging).
· · »» ===> 4000 nm /Formerly T5 "(Z / ZIR) - Beyond Extreme IR" (Incorrect - See Below)
============= ==== ==== ========= ================= ====================================== ===========================================
10 000 LN N LwIR (LIR) Longwavelength
Infrared 		Intermediate-IR (IIR) / (IR-C)
└ Longwave-IR - "N-Band" (~10 500 nm) 		Not normally a visual range.
└ Color: Infrared-N
· · »» Room Temperature ===> ( 8 000 nm - 25 000 nm )
· · »» Thermal Infrared (Imaging).
-- Far Infrared Region --
20 000 FQ Q FarIR (FIR) Far Infrared Far IR (FIR)
└ Very Longwave IR (VLwIR) - "Q-Band" (~21 000 nm) 		Not normally a visual range.
└ Color: Infrared-Q
· · »» Room Temperature ===> ( 8 000 nm - 25 000 nm )
-- Beyond Extreme Infrared (Terahertz) Region --
> 30 000 ZT T XIR /
ZIR / TIR 		Extreme Infrared Extreme IR (XIR) / (ZIR) / (TIR)
└ Extreme Longwave IR (XLwIR / XIR)
└ THF μ-wave-Radiation (ZIR / TIR) - "THz Band" ( >30 000 nm ) 		Not normally a visual range.
└ Color: Infrared-T
· · »» Terahertz Radiation ==> ( >30 000 nm - 1 million nm )
============= ==== ==== ========= ================= ====================================== ===========================================


THE ELECTROMAGNETIC SPECTRUM -
Radiowave Range


Wavelength Code Band Name Details NOTES
================= === ==================================================== ======================================== ===================================
100μm - 1mm THF TeraHertz Frequency Band (300 GHz - 3 THz) Submillimeter Band: Extreme Infra-Red / THF-Microwaves Extreme Infra-Red / Microwave Range (Overlap)
1mm - 10mm EHF Extreme High Frequency Band (30 GHz - 300 GHz) Millimeter Band Microwave Range (Millimeter Wave)
1cm - 10cm SHF Super High Frequency Band (3 GHz - 30 GHz) Centimeter Band Microwave Range (Centimeter Wave)
================= === ==================================================== ======================================== ===================================
10cm - 100cm UHF Ultra High Frequency Band (300 MHz - 3 GHz) Decimeter Band Radiowave Range (Microwave for >1.0GHz)
1m - 10m VHF Very High Frequency Band (30 MHz - 300 MHz) Meter Band Radiowave Range
10m - 100m HF High Frequency (Shortwave) Band (3 MHz - 30 MHz) 10-Meter Band (Decameter Band) Radiowave Range
100m - 1000m MF Medium Frequency (Mediumwave) Band (300 kHz - 3 MHz) 100-Meter Band (Hectometer Band) Radiowave Range
1km - 10km LF Low Frequency (Longwave) Band (30 kHz - 300 kHz) 1000-Meter Band (Kilometer Band) Radiowave Range
10km - 100km VLF Very Low Frequency Band (3 kHz - 30 kHz) 10,000-Meter Band (10 Kilometer Band) Radiowave Range
100km - 1000km ULF Ultra Low Frequency Band (300 Hz - 3 kHz) 100,000-Meter Band (100 Kilometer Band) Radiowave Range
1000km - 10,000km SLF Super Low Frequency Band (30 Hz - 300 Hz) Mega-Meter Band Radiowave Range
10,000km - 100,000km ELF Extreme Low Frequency Band (3 Hz - 30 Hz) 10 Mega-Meter Band Radiowave Range
================= === ==================================================== ======================================== ===================================


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