question transmission an reflection glass

Dear members,

I have a question about glass.
Is it possible, and if the answer is yes, how can I make a glass definition with transmission en reflection properties

Now I make only glas whit transmission properties as below

void glass glasname
0
0
3 0.596 0.654 0.654

Kind regards,
Sierd Tilma

Hi Sierd!

I have a question about glass.

Is it possible, and if the answer is yes, how can I make a glass
definition with transmission en reflection properties
Now I make only glas whit transmission properties as below

The glass material is an optimization for thin, clear glass panes.
Transmission through such glass, which depends on the material, is
expected when you define a glass material in Radiance, can be measured.
Reflection is - for an ideal, flat glass - a property of only the angle
between surface normal and ray and the transmission (as a fraction of
light is reflected from the second surface, which means it has to travel
2 times through the material).

So for all use cases that the glass model in Radiance was implemented
for, you would not need the reflection to be defined.

Cheers, Lars.

The glass material assumes an uncoated dielectric material, thus its reflectance and transmittance as a function of incident angle are precisely determined by physics from the normal transmissivity (which you specify) and the index of refraction (which you can also give but defaults to 1.52).

If you want finer control over reflectance separate from transmittance, you should use the "trans" material type, although accounting for the angular dependence is more difficult with this type. Try the "glaze" script if you have a multi-pane system you wish to model.

Best,
-Greg

···

From: Sierd Tilma <[email protected]>
Date: December 4, 2013 8:00:44 AM PST

Dear members,

I have a question about glass.
Is it possible, and if the answer is yes, how can I make a glass definition with transmission en reflection properties

Now I make only glas whit transmission properties as below

void glass glasname
0
0
3 0.596 0.654 0.654

Kind regards,
Sierd Tilma

1 Like

Dear members,

I have a question about glass.

Is it possible, and if the answer is yes, how can I make a glass definition
with transmission en reflection properties

Now I make only glas whit transmission properties as below

void glass glasname

0

0

3 0.596 0.654 0.654

Kind regards,

Sierd Tilma