menco said:2.1x10^-15 seconds
Period refers to the amount of time it takes for one complete cycle of a lightwave to occur, while frequency refers to the number of cycles that occur in one second. In other words, period is measured in units of time (such as seconds or milliseconds), while frequency is measured in units of cycles per second, also known as Hertz (Hz).
Period and frequency are inversely related to each other. This means that as the period increases, the frequency decreases and vice versa. This relationship can be represented by the equation: frequency = 1/period or period = 1/frequency.
The period and frequency of a lightwave are directly related to its energy. The higher the frequency of a lightwave, the more energy it has. This is because higher frequency light waves have shorter periods, which means they complete more cycles in a given amount of time, resulting in more energy. Similarly, lower frequency light waves have longer periods and therefore, less energy.
The period of a lightwave can be measured by using a stopwatch or other timing device to measure the time it takes for one complete cycle to occur. The frequency can be measured using a device called a spectrophotometer, which measures the wavelength of the lightwave and uses that information to calculate the frequency.
Yes, the period and frequency of a lightwave can be changed. This can be done by altering the source of the lightwave, such as changing the speed or direction of a vibrating object that is producing the light. The medium through which the lightwave travels can also affect its period and frequency. For example, light travels at different speeds in different materials, causing the wavelength and frequency to change.