200
200
You generally need the same number of volts for a given amount of light (lumens), regardless of how many hours you use it. They typically measure the amount of energy used by a bulb in "watts", not volts, and you can find a wide range of wattage ratings from milliwatt LEDs to 1000-watt floodlights and on up.
First it will glow very brightly, then burn out in a short period of time.
A decibel is a measure of relative power, to compare one power level with another. 'dBm' means dB relative to 1 milliwatt and is a common unit of power in communications systms, and 0 dBm is the same thing as 1 milliwatt.
When a bulb is attached to a battery or a cell as scientists call it, the bulb glows. If you want a bulb to glow more and more brighter, it depends on how many batteries you attached to the bulb. If you attach a lot of batteries at the same time, the bulb might even explode or burn out. The wires that hold the interaction between a light bulb and the battery is electricity. The electricity flows through the wires and touches the bulb and that is how a light bulb glows.
An LED light bulb can last up to 25,000-50,000 hours, depending on the quality of the bulb and usage. This makes them much more durable and long-lasting compared to traditional incandescent or CFL bulbs.
Who doesn't love glow-in-the-dark Halloween costumes, stickers, or glow sticks? Many bugs glow in the dark, too. Unlike glow toys, these bugs make their own light. These bugs are bioluminescent (by-oh-lew-muh-NESS-ent). Chemicals in their bodies combine to make them shine. Although bioluminescent animals light up, they don't give off heat like a light bulb does. Fireflies are the most common glow-in-the-dark insects. They light up to communicate with each other as they look for a mate.
there are eight glow plugs.
The word glow has one syllable.
There are 1000 milliwatts in a watt. There are 1000 watts in a kilowatt. Therefore, there are 1 million milliwatts in one kilowatt.
You'll need to be more specific as to what you mean by mW. That would technically be milliwatt which is a unit of power and cannot be converted from length.
The glow of the burning factory could be seen for many miles. Fireflies use cold chemical luminescence to make themselves glow.