Blaze

The blaze wavelength is that wavelength for which the angle of reflectance from the groove face and the angle of reflection (usually the angle of incidence) from the grating are identical. 

Figure 3.6 Use of a blazed grating at the blaze angle 4> N is the normal to the grating surface...

Diffraction gratings may be made by a holographic process, but blaze characteristics cannot be controlled and their efficiency is low in the infrared. They are mostly used for low-order work in the visible and near-ultraviolet. 

Question. A diffraction grating has a ruled area that is 10.40 cm wide, has 600.0 grooves per millimetre and is blazed at an angle of 45.00°. 

The blazing filler metal is analyzed for those specific elements for which values are shown. If the presence of other elements is indicated in the analysis, the amount of those elements is detemiined to ensure that the maximum total is <0.15 wt%. 

One of tlie most legendary disasters occurred in Cliicago in October 1871. Tlie "Great Cliicago Fire," as it is now known, is alleged to liave started in a bam owned by Patrick O Leary, when one of liis cows overturned a lantern. The O Leary house escaped unlianned, since it was upwind of tlie blaze, but tlie bam was destroyed as well as 2124 acres of Chicago real estate. 

Lichterfabrlk,/. candle factory, lichterloh, a. blazing. — adv. ablaze. Lichterscheinung, /. luminous phenomenon ... 

Loden, m. coarse cloth tuft, lodem, v.i. blaze, flame, flare. 

Lohe, /. tanbark tan liquor, ooze flame, blaze. 

Cary 83 2.0 — Littrow double gratings 0.4 1200 lines/mm, blazed at... 

Jarrell-Ash 25-400 0.25 cm-1 at 632.8 nm 10-M (15A cm-1 from Czerny-Turner double grat- 1.0 1180 lines/mm, blazed at... 

This section refers to classically-ruled plane diffraction gratings where the grooves have a blazed profile as illustrated in Fig. 2a. 

---