all pencils are made up of graphite
If your compairing apples to apples like 3 watt leds to 3w leds then 128. The more leds the higher the power.
They are made out of pixie dust and beeswax with neon leds in the engine compartment of the brain of your mom...
Yes, LEDs are dimmable.
Basically, when LEDs are connected in parallel, the LEDs with the lowest resistance will be the brightest, the other LEDs will be dimly lit or not lit at all. Therefore, use LEDs with the same model number and colour.
No, traffic lights are typically made using light emitting diodes (LEDs) or incandescent bulbs. Gallium is commonly used in LEDs to emit light in various electronic devices, but it is not the primary material used in the production of traffic lights.
Gallium nitride (GaN) LEDs are commonly used to create blue LEDs. By combining a blue LED with a yellow phosphor coating or a green and red LED, white light can be produced. Additionally, different additives can be incorporated to create other colors such as red, green, and yellow LEDs.
No.
red, green, yellow, blue leds
Most modern torches have LEDs in them, several newer models of Audis do too.
It depend on what the rating voltage of the LEDs are.
SemiLEDS Corporation (LEDS) had its IPO in 2010.
Resistors don't light up LEDs. They're required in a circuit along with LEDs in order to prevent excessive current through the LEDs when the LEDs are forward biased. The correct resistance value depends on the supply voltage and the desired (rated) current through the LEDs, and there's typically one resistor in series with each LED.