0 0. kiper. Lv 5. Since we know that Power (P) = Voltage x Current = V I . Wattage is what determines the brightness of the light. A star's _____ brightness is the brightness seen by humans on Earth. Lumens is the unit of measurement for that brightness. b. amplitude. Likewise, what would happen if we decrease the voltage? The brightness of a star depends on how much light is released by the star and how far the star is from Earth. It makes sense assuming that the number of photons would affect the brightness of light. This is very relevant today as newer light bulbs use less energy, so wattage is not a reliable measure of a light bulb’s brightness. For a typical light, much of this power would be in forms that are not detectable by a human eye—like stuff in the infrared spectrum. To understand how bright a light … Does brightness of light depend on number of quanta in the light? A 50-watt bulb is not as bright as a 100-watt bulb. 4 years ago. 4 Answers. The brightness percept depends on the perceived reflectance of the surfaces. I am confused as to on what factors does brightness of a light bulb depends. When toggling between dark/light background the brightness will decrease/increase respectively. actually the square of the amplitude. Brightness of bulb depends on both voltage and current. Suppose we increase the voltage more than labeled on it; would the brightness decrease, increase or remain the same? The brightness depends on power. There are two ways to describe a star's brightness. Stars look like they are tiny pinpoints of light when in reality, they are anywhere from 10 to 8 million miles in diameter. Relevance. To save the most energy, choose the … Brightness of a light bulb depends on the power, current, resistance and size of the filament. Answer Save. So, the brightness in lumens is only the human detectable stuff. For example, I believe that a 60 watt bulb gives 1300 Lumens of light. Pay close attention to lumens, since this number indicates the brightness, or light output, of the bulb. For instance, a 100-watt light bulb is not necessarily brighter than a 40-watt light bulb. Porky. Simply take your current incandescent watts and select the corresponding LED bulb equivalent on the lumens brightness scale. So whether you increase the current or the voltage the brightness will increase. A star's _____ brightness is its actual brightness and does not depend on where the star is viewed from. This is not tied at all to the lightning conditions of the room, and I've been able nail down that this only happens when two conditions are met (but it it 100% reproducible under these conditions) 1. d. speed. c. wavelength. For example, a 100 watt bulb is brighter than a 60 watt bulb. Because the light appears to come from above, the visual system infers that the upper square is receiving more incident light than lower square. Brightness of a light bulb depends on the power, current, resistance and size of the filament. Lumens is the unit of measurement for the brightness of a bulb. I was working through some questions on DC Circuits. Lv 4. As where 100 watt bulb gives 1450 lumens. For a bulb with given voltage and power, on what factors would its brightness depend? short answer - the different guy is ideal. Stack Exchange Network. The brightness, or intensity, of light depends on its...? b. amplitude. Lumens is the unit of measurement for the brightness of a bulb. Summary: The brightness or intensity of light depends on the distance and amount of energy coming from the light source. Favorite Answer. 1 decade ago. a. frequency. Incandescent watts and select the corresponding LED bulb equivalent on the power, current, resistance and size of light. 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## brightness of light depends on

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