BR stands for Bulk Reflector, that are traditionally for incandescent reflector lamps, not halogen Par lamps, which mean Parabolic Aluminized Reflector.
R40 is a Red Heat Lamp Light Bulb BR40 is a Clear Heat Lamp Light Bulb
Halogen gas is in a Tungsten-Halogen Light Bulb.
Halogen light bulbs are made in a variety of sizes to meet different needs.
Halogen is a gas, so your question doesn't make much sense. If you're asking about a halogen (light) bulb, then the answer is: mainly halogen.
Yes, a BR30 bulb can fit into a BR40 fixture. However, there may be a small gap in the fixture due to the size difference between the two bulb types. This size difference may impact the aesthetics of the fixture but should not affect the functionality of the bulb.
A typical MR16-50W halogen bulb produces around 900-1000 lumens of light.
Any where from 3000-6000 hours :)
Yes, the halogen bulb would provide about 30% more brightness (lumens) for the same electric power rating. So 70 watt halogen is about equal to 90-100 watt incandescent.
A halogen floor lamp with a 300 watt halogen bulb will illuminate a room from wall to wall. While a halogen bulb gives off very radiant, bright light, you must be very careful because it also gets tremendously hot.
Halogen lamps are also known as quartz iodine lamps. Halogen light bulbs can be purchased at a number of hardware stores including Lowes and Home Depot.
There are several types of light bulb. A basic incandescent bulb will contain a tungsten filament, surrounded by a vacuum. Variations may have an inert gas inside the bulb, such as halogen.
A halogen bulb works equally well with AC or DC.