I've found that, for the most part, the opposite is true. Typically I think that lowering a ceiling makes even a large room feel too contained and and claustrophobic, while a high ceiling can make a small room feel much larger than it really is.
Convex lenses make images appear larger; they are used in magnifying glasses.
To make distant things closer they use a telescope, to make close things larger they use a sense or magnifying glass, to make very small things larger they use a microscope. to make incredibly small things clearer they use mathematics.
It probably would make it seem smaller. if darker colors like Brown and dark green do, than really so would dark blue. Any dark color will make a room appear smaller because there is not much reflection of of it. White makes a room appear larger.
Polystyrene tiles on the ceiling would be used for acoustic purposes, to deaden echoes and make rooms quieter.
reflection, refraction, dispersion and total internal reflection of the sun's rays make rainbows appear.
The Sky
When you paint a room, white makes the room appear to be larger. Horizontal stripes also make a room appear larger.
a microscope
If you appear to have a problem with wiring in ceiling and no ceiling access, you may have to make your own access. One way in a Sheetrock ceiling would be to cut a hole that will fit a quick access panel. This way you won't have to repair and repairing the area.
the purpose is to make things larger thean they appear.
Ceiling mirrors can be used for many purposes. The most common use is in stores or casinos for security. A security guard or employee can watch an area for theft in stores, or cheating in casinos. Mirrors can also be used to make a room appear larger. In a place of suitable privacy such as a bedroom, a ceiling mirror is often used to enhance the experience of sexual behavior by providing an unusual and exciting visual perspective.
There are cosmetic lenses such as circle lenses that are larger in diameter to our irises. This makes eyes appear larger when wearing these lenses. Other than makeup, I don't know how else to make eyes appear larger.
the purpose is to make things larger thean they appear.
yes it does
Some do and some dont!
I would paint the ceiling white, especially since the bathroom is small. If you are using a deep red color, it could make the bathroom appear even smaller, and painting the ceiling red could make you feel boxed in. A while ceiling will help to create a more open feeling.
A magnifying glass or a microscope.