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MaxineNo, light transmittance cannot be more than 100 percent. Transmittance is a measure of how much light passes through a material or substance, and it is typically expressed as a percentage between 0% and 100%. If light transmittance were to exceed 100%, it would imply that more light is transmitted than actually strikes the material, which is not physically possible.
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Why do ir spectra seldom show regions at which the transmittance is 100 percent?
IR spectra seldom show regions at 100% transmittance because most molecules absorb some infrared radiation due to their unique bond vibrations. Even if there are no absorptions in a particular region, factors like impurities, instrument noise, or scattering can lead to a lack of complete transmittance.
Why do you zero the spectrophotometer on 0 and 100 transmittance and not absorbancy?
Zeroing the spectrophotometer on 0 and 100% transmittance ensures that the instrument is properly calibrated and accounts for potential variations in the blank solution that might affect the absorbance readings. This calibration process helps to provide more accurate and reliable absorbance measurements for the samples being analyzed.
What is the percent efficiency of a 60W light bulb that produces 6W of light energy?
The percent efficiency would be calculated by dividing the useful output by the total input energy and multiplying by 100. In this case, the useful output is 6W (light energy produced) and the total input is 60W (electricity consumed). Therefore, the efficiency would be (6/60) * 100 = 10%.
Do LED lights have a 100 percent lumen efficiency?
No, LED lights typically have a higher lumen efficiency than traditional incandescent bulbs, but they are not 100 percent efficient. LED lights can convert more of the electricity they consume into visible light, resulting in higher lumen output for the same amount of power. However, some energy is still lost as heat.
What percentage is a 100 watt light bulb brighter than a 60 watt light bulb?
A 100 watt light bulb is 66.7% brighter than a 60 watt light bulb. This can be calculated by taking the difference between the two wattages (40 watts) divided by the original wattage (60 watts) and then multiplied by 100.
