No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear windowpane. The 10% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is transmitted by four sheets?
To calculate the amount of light transmitted by four sheets of clear windowpane, we can start by determining the amount of light transmitted through a single sheet.
According to the given information, about 90% of light passes through an average sheet of clear windowpane. This means that the transmission percentage (T) of a single sheet of clear windowpane is 90%.
To calculate the amount of light transmitted by four sheets, we can multiply the transmission percentage of each sheet together. Since there are four sheets, the calculation would be:
T_total = T_sheet1 × T_sheet2 × T_sheet3 × T_sheet4
Substituting the transmission percentage of a single sheet (90%) into the equation:
T_total = 0.90 × 0.90 × 0.90 × 0.90
Simplifying the calculation:
T_total = 0.6561
Therefore, the total percentage of light transmitted by four sheets of clear windowpane is approximately 65.61%.