Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?
3x10^8m/s / 670nm = 3x10^8 m/s / 670*10^-9m = 4.48*10^14/s = 448THz
Oh, wavelength and frequency, you're like the stars of a comedy duo! So let me break it down for you. The speed of light is kind of like a persistent snail—it's always constant at around 299,792,458 meters per second. So to calculate the frequency of light, you need to divide that snail-like speed by the wavelength.
For a laser pointer with a wavelength of 670 nm (nanometers), we can convert it to meters by dividing by 1 billion, since there are 1 billion nanometers in a meter. So, 670 nm becomes 0.00000067 meters.
Now, we divide our snail-like speed of light (299,792,458 m/s) by the wavelength in meters (0.00000067 m). And voila, the frequency of our laser pointer light waves is around 446,618,393,283,582 Hz!
Now that's a big number, but don't worry, you only need to know it if you plan on winning a really specific trivia contest.
To find the frequency of light, we need to use the formula:
frequency = speed of light / wavelength
The speed of light is approximately 3.00 x 10^8 meters per second (m/s), and the wavelength is given as 670 nm.
Let's convert the wavelength from nanometers (nm) to meters (m) first:
1 nm = 1 x 10^-9 m
So, 670 nm = 670 x 10^-9 m = 6.7 x 10^-7 m
Now, we can calculate the frequency:
frequency = (3.00 x 10^8 m/s) / (6.7 x 10^-7 m)
= 4.48 x 10^14 Hz
Therefore, the frequency of light with a wavelength of 670 nm is approximately 4.48 x 10^14 Hz.
To find the frequency of light, we can use the equation:
c = λ * f
Where:
c = speed of light in a vacuum (approximately 3 × 10^8 m/s)
λ (lambda) = wavelength of light
f = frequency of light
Rearranging the equation, we can solve for the frequency:
f = c / λ
Substituting the given wavelength of 670 nm (which is equal to 670 × 10^(-9) m) and the speed of light:
f = (3 × 10^8 m/s) / (670 × 10^(-9) m)
Calculating this, we find:
f ≈ 4.48 × 10^14 Hz
So, the frequency of the light emitted by the laser pointer is approximately 4.48 × 10^14 Hz.