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That the glass material is reflective is stated in the Reference Manual:

Glass is similar to dielectric, but it is optimized for thin glass surfaces (n = 1.52). One transmitted ray and one reflected ray is produced.

Since this is a perfect abstract material, I expect the reflectance to be (1 - the transmittance). The details are in the code in glass.c.

That the glass material is reflective is stated in the Reference Manual:

Glass is similar to dielectric, but it is optimized for thin glass surfaces (n = 1.52). One transmitted ray and one reflected ray is produced.

Since this is a perfect abstract material, I expect the reflectance to be (1 - the transmittance). The details are in the code in glass.c.

(Hey, Unmet Hours, how 'bout support for equations?)

That the glass material is reflective is stated in the Reference Manual:

Glass is similar to dielectric, but it is optimized for thin glass surfaces (n = 1.52). One transmitted ray and one reflected ray is produced.

Since this is a perfect abstract material, I expect the reflectance to be (1 - the transmittance). T), where T is transmittance. The details are in the code in glass.c.

(Hey, Unmet Hours, how 'bout support for equations?)

(They have it!)