Equation Then you only need to calculate for the one color that corresponds to the higher frequency.) Substituting this frequency into the Planck-Einstein equation gives the following result. What is its frequency? Result Observed During the Photoelectric Effect Because a concave mirror is curved inward, the angle that the light hits the mirror varies and this causes light to focus at a certain point. light Frequency Formula Use the sliders to adjust the vibrational frequency, the linear density of the string, and the string tension. What is the wavelength of light with a frequency of 5.6 x 1014 Hz? Imagine the Universe! Calculating wavelength is easy as long as you know the correct equation. Frequency Response of Amplifiers In physics, the frequency of a wave is the number of wave crests that pass a point in one second (a wave crest is the peak of the wave).. Hertz (symbol Hz) is the unit of frequency.. The wave velocity equals the speed of light in vacuum: f ≈ 100/s ≈ 100 Hz. Calculate the frequency of light that has a wavelength of 4.25 x 10-9m. 4.7 × 105 m 4. By the simple relationship between wavelength and frequency ν, or wavelength and energy ε, from the spectrum thus obtained, you can determine the … Let's use the equation below to determine the answer. This equation shows that wavelength and frequency are inversely … Photons with a frequency less than . E=MC^2, or energy of a particle equals its mass times the speed of light squared. Frequency is how many complete waves go by per second. Where f is the frequency; c is the speed of light; w is the wavelength; Frequency of Light Definition . The wave speed is equal to the product of its frequency and wavelength, and this implies the relationship between frequency and wavelength. Radio waves travel at the speed of light, so in this case v is equal to 299,792,458 metres per second (m/s). Wavelength, λ = c/f. Methods: The energy in a mole of photons can be related to the wavelength of light by the following equation: where E is the energy in a mole of photons, N is Avogadro's number (6.02 x 10 23 photons per mole), h is Planck's constant (1.58 x 10-34 cal/s), c is the velocity of light (3 x 10 17 nm/s), and l is the wavelength of light (nm).. What is the frequency of light with a wavelength of 1.87 x 10-14 m? It is stated as “The minimum frequency of incident light to produce a photoelectric effect is called threshold frequency or cut off frequency.” The light having a frequency less than the threshold frequency cannot photoelectrons from the metal surface, so no photoelectric effect is observed.. Thanks! … Frequency and Kinetic Energy. Wavelength to Frequency Formula Questions: 1) One of the violet lines of a Krypton laser is at 406.7 nm. Plug those in and solve, and you get 4 * 10^-19 Joules. Courtesy Prof. Rick Trebino, Georgia Tech The relative phase of an electron Typically, it is the lowest resonant frequency of any vibrating object that displays a periodic waveform. Notice how the frequencies stay within more-or-less the middle area of 10 14, ranging from 4.29 to 7.50, but always being 10 14.If you are faced with this calculation and you know the wavelength is a visible one (say 5550 Å, which is also 555 nm), then you know the exponent on the … The source of light or electromagnetic … What frequency do we need to tune our receiver to in order to hear the broadcast? The equation for frequency is given on the right. Frequency period formula angular frequency cycle per second hertz Hz amplitude equation formulary acoustic time wavelength Hz to millisecond ms cycle duration time period relationship cycle duration periodic time frequency t=1/f calculator calcation worksheet - … Thanks! Frequency = 1/period = number of cycles/time. (b) An FM radio station broadcasts electromagnetic radiation at a frequency of 103.4 MHz (megahertz; MHz = 10 6 s–1). But a mole of these photons carries about 171,000 joules of energy, or 171 kJ/mol. N = a particular number of cycles. On this page, we introduce one of the most fundamental equations in antenna theory, the Friis Transmission Equation.The Friis Transmission Equation is used to calculate the power received from one antenna (with gain G1), when transmitted from another antenna (with gain G2), separated by a distance R, and operating at frequency f or wavelength lambda. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History. Einstein assumed that. Note how the wavelength (\(\lambda\), greek lambda) is inversely proportional to the frequency (\(\nu\), greek nu). 2.92 x 1015 s-1b. Identify the type of electromagnetic radiation.Ans: = 7.1 x 1016 Hz.UV radiation. Frequency of Light Formula. Simple algebra (divide both sides of … Yes No. We know the value of the speed of light and we are given the … Where h is the Planck’s constant and ν is the frequency of light. 8. The wavelength, λ = 406.7 nm = 406.7 x 10-9 m.. λ = v/f The key to any frequency and wavelength problem is the fact that frequency and wavelength have an inverse relationship described by the equation . A single photon of red light carries an insignificant amount of energy. The Threshold frequency in photoelectric effect is defined as the minimum frequency of the incident light, which can cause electrons' ejection without giving them additional energy is calculated using threshold_frequency = Work function of the surface of the metal / [hP].To calculate Threshold frequency in photoelectric effect, you need Work function of the surface of … These energy magnitudes are computed from the radiated energy using the Choy and Boatwright (1995) formula. Answers: 1 on a question: II. Wavelength is the distance between two adjacent crests (or troughs). The equation that relates the wavelength and frequency of light is C. Is equal to lambda times. The equation that relates wavelength, frequency, and speed of light is c = lambda*nu c = 3.00xx10^8 "m/s" (the speed of light in a vacuum) lambda = wavelength in meters nu = frequency in Hertz (Hz) or 1/"s" or "s"^(-1)". (c) Rearrange the light equation thusly: The speed of light in a vacuum is 3.00x (10*8)m/s. Frequency equation from the wavelength. h = 6.63x10 34 J s = 4.13566733×10 −15 eV s, is Planck's constant. Light consists of photons or quanta of energy, energy in each photon is hν. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. Let's use the equation below to determine the answer. As the frequency increases, so does E. Why? In Figure 1, two different cutoff frequencies can be distinguished : f lc for “low cutoff” and f hc for “high cutoff”. For light shining on the metal, there is a minimum “cutoff” frequency before the ejected electrons have any KE. Description Simulation of standing waves on strings. #color(blue)( lamda * nu = c)" "#, where #lamda# - the wavelength of the wave #nu# - its frequency #c# - the speed of light in a vacuum, usually given as #3 * 10^8"m s"^(-1)#. 3.56 x 1014 s-1c. In physics, frequency is the number of waves that pass a fixed point in unit time and vibration is the “oscillating, reciprocating, or other periodic motion of a rigid or elastic body or medium forced from a position or state of equilibrium.”. 0.178m f = 1.69x109Hz = 1.5x10-4m 0.15mm Answer: The velocity, v, of light is 3 x 10 8 m/s. hen using a calculator, enter the values according to the wavelength formula: λ = v/f, therefore, λ = 299792458/10 = 29.98 m. Rearranging the equation yields a new equation of the form: Speed = Wavelength • Frequency. Today, an experimental setup similar to that of Thomas Young's is commonly used in a Physics classroom to repeat the … frequency be ω 0, and the forcing frequency be ω. Frequency is the number of occurrences of a repeating event per unit of time. The quantity f hc-f lc is called the bandwidth and represents the frequency range where the gain is above the -3 dB plateau. Frequency doesn't change because it depends on travelling of waves across the interface. What is its frequency? That is, the frequency is 6/2 = 3 waves/second, or 3 Hz. Using the Hardy-Weinberg equation and data from the table above, determine the number of mice with the DD and Dd genotypes on the light, rocky, granite substrate. Light moves with the speed of 3.00 x 10 8 meters per second. Threshold Frequency equation. The frequencies of the various harmonics are multiples of the frequency of the first harmonic. Speed /Frequency / Wavelength Equation: Speed of all Electromagnetic Spectrum Waves (c) = 3.0 x 108 m/s c (m/s) = ν x λ ν (Hz) = c ÷ λ λ (m) = c ÷ ν 1. The period is the duration of time of one … Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency? Substituting this frequency into the Planck-Einstein equation gives the following result. The wave velocity equals the speed of light in vacuum: f ≈ 100/s ≈ 100 Hz. The period is the duration of time of one … Green light has a wavelength of 0.00000052 meters. 1. Young expanded the mathematical model presented above by relating the wavelength of light to observable and measurable distances. Improve this answer. The wave speed is equal to the product of its frequency and wavelength, and this implies the relationship between frequency and wavelength. The wavelength of light, and all other forms of electromagnetic radiation, is related to the frequency by a relatively simple equation: n = c/l. The frequency should have units of Hz or s^(-1). Use the equation En = -2.18 x 10 -18 J [(1/nf2)-(1/ni2)]a. Young expanded the mathematical model presented above by relating the wavelength of light to observable and measurable distances. The frequency formula is used to determine the frequency (f), time period (T), wave speed (V), and wavelength (λ) and to derive the other related formulas. The speed of light is 3.00 × 10 8 m/s. λν=c f is solved for c, speed of light. Doppler Effect Equations for Light. The wavelength, λ = 406.7 nm = 406.7 x 10-9 m.. λ = v/f It is also occasionally referred to as temporal frequency to emphasize the contrast to spatial frequency, and ordinary frequency to emphasize the contrast to angular frequency.Frequency is measured in hertz (Hz) which is equal to one event per second. 2.92 x 1014 s-1d. Hz is hertz or reciprocal seconds. Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency? f 4 = 4 • f 1 = 4800 Hz. Green light has a frequency of 6.01 x 1014 Hz. The speed of light is 300,000,000 m/s. View question - (Use c=f*lamda) calculate the frequency of green light with 545 nm (1nm = 10 to the -9th power) In these two equations, c 0 is the speed of the wave in a stationary medium (the speed of sound in this case), and the velocity is the radial component of the velocity (the part in a straight line from the observer). If the wavelength is given, the energy can be determined by first using the light equation (c = vk) to find the fre uenc , then using The above equation is known as the wave equation. by Ron Kurtus. Calculate the frequency of green light waves with this wavelength. Frequency and wavelength can be related through the speed of light. The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. This equation can be used to determine the … A ray of light travels from air to liquid by making an angle of incidence 24° and angle of refraction of 18°. Both these formulas are non-relativistic approximations that are true as long as the velocity of the moving object is much less than the speed of light. The energy of each photon is equal to Planck's constant, multiplied by the frequency of the light, h is always 6.63 * 10^-34 Joule seconds, and the frequency is 6 * 10^14 Hz. ... Find the frequency of light if wavelength equals 3000 km. Radio waves travel at the speed of light, so in this case v is equal to 299,792,458 metres per second (m/s). Answer: The velocity, v, of light is 3 x 10 8 m/s. We know the value of the speed of light and we are given the … Using the equation v=fx λ, calculate the frequency of red-light. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. The light speed can be defined as the frequency of the EM wave is multiplies with its wavelength. It is also occasionally referred to as temporal frequency to emphasize the contrast to spatial frequency, and ordinary frequency to emphasize the contrast to angular frequency.Frequency is measured in hertz (Hz) which is equal to one event per second. FYI, lambda is the Greek letter lambda , … f 2 = 2 • f 1 = 2400 Hz. f 3 = 3 • f 1 = 3600 Hz. Notice that in this equation the two quantities which can change (ν and E) are on DIFFERENT sides of the equation whereas in the inverse relationship in (a), both λ and ν are on the same side, with the constant on the opposite side. Determine the wavelength of light in air and in liquid if the frequency of light is 5.4 x 10 14 Hz, c = 3 x 10 8 m/s. Use the wave equation to solve the following: 1. The quantity f hc-f lc is called the bandwidth and represents the frequency range where the gain is above the -3 dB plateau. The Light Clock A theoretical proof of time dilation. T = period, the time which is required for one cycle. To figure out the energy, use the E = hf equation. The Constant Speed of Light Light is very, very strange… Speed, Frequency and Wavelength Explained, and a Calculator. The speed of a wave is related to its frequency. The lowest or base frequency produced by any instrument producing sound is known as the fundamental frequency. EELNE please show all workko helllppp Using the symbols v, λ, and f, the equation can be rewritten as. Light speed = Wavelength * frequency of oscillation. f = 1/T = N/t. Using the symbols v, λ, and f, the equation can be rewritten as. Speed /Frequency / Wavelength Equation: Speed of all Electromagnetic Spectrum Waves (c) = 3.0 x 108 m/s Speed (m/s) = Frequency x Wavelength Frequency (Hz) = Speed ÷ Wavelength Wavelength (m) = Speed ÷ Frequency (Hz) 1. The equation for frequency is given on the right. The following equation can be used to calculate the frequency of light. The lowest or base frequency produced by any instrument producing sound is known as the fundamental frequency. If you know the speed and frequency of the wave, you can use the basic formula for wavelength. Where: λ is the wavelength; ν is the frequency; E is the energy; c is the speed of light, c = 299,792,458 m/s (186,212 miles/second) h is Planck's constant, h = 6.626 x 10-27 erg-seconds; Both the speed of light and Planck's constant are constant – they never change in value. and wavelength, according to this equation: \[v = f~ \times \lambda\] where: v is the wave speed in metres per second, m/s. What is the wavelength? Calculate the wavelength of this radiation. Since infrared light is a part of electromagnetic spectrum, the relation between the wavelength, frequency, and velocity is given by the formula: \(c=f\lambda\) Consider c = 3 x 10 8 m.s -1 . Because a concave mirror is curved inward, the angle that the light hits the mirror varies and this causes light to focus at a certain point. Answer (1 of 4): 1 nm = 10ˉ⁹ m. In the equation c=\lambda\nu, c is the speed of light; λ is the wavelength; and ν is the frequency. Furthermore, 1 hz refers to one cycle per second. M e, computed from high frequency seismic data, is a measure of the seismic potential for damage. Calculating wavelength is easy as long as you know the correct equation. v = f • λ Weak vibration. Putting these figures (without commas) into the calculator above … (c) Rearrange the light equation thusly: A single photon of red light carries an insignificant amount of energy. The Doppler Effect equations for light show the change in the observed wavelength or color compared with that emitted from a moving source.. 1.17 x 1015 s-1 Hz is hertz or reciprocal seconds. 2. Find R.I. of liquid. Einstein’s Photoelectric Equation: On the basis of Planck’s quantum theory, Einstein derived an equation for the photoelectric effect known as Einstein photoelectric equation. Derivation of Young's Equation. Frequency of Light Formula. The above equation is known as the wave equation. Derivation of Young's Equation. The equation which relates frequency and wavelength of light or any other electromagnetic wave, when λ is the wavelength, f is the frequency and c is the speed of light is: λf = c. This implies, Frequency, f = c/λ. Time Dilation Worked Examples Solving the time dilation equation. Problem: Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 3 to n = 1 energy level, based on the Bohr theory. v = f • λ So, what does an inverse relationship mean? If you know the speed and frequency of the wave, you can use the basic formula for wavelength. Red light with a wavelength of 700.0 nm has a frequency of 4.283 x 10 14 s-1. The wavelength of light, and all other forms of electromagnetic radiation, is related to the frequency by a relatively simple equation: n = c/l. Related Pages. Typically, it is the lowest resonant frequency of any vibrating object that displays a periodic waveform. Mhm. The Constant Speed of Light Light is very, very strange… Speed, Frequency and Wavelength Explained, and a Calculator. Notice how the frequencies stay within more-or-less the middle area of 10 14, ranging from 4.29 to 7.50, but always being 10 14.If you are faced with this calculation and you know the wavelength is a visible one (say 5550 Å, which is also 555 nm), then you know the exponent on the … Frequency equation from the wavelength. V=C/ (lambda), or frequency equals the speed of light divided by wavelength. Wavelength is the distance between two adjacent crests (or troughs). It states the mathematical relationship between the speed (v) of a wave and its wavelength (λ) and frequency (f). Example: A particular AM radio station uses a wavelength of 250 metres. But a mole of these photons carries about 171,000 joules of energy, or 171 kJ/mol. Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency? Related Pages. So, what does an inverse relationship mean? The SI unit which is hertz was named after Heinrich Rudolf. where c is the speed of light (measured in meters per second), n is the frequency of the light in hertz (Hz), and l is the wavelength of the light measured in meters. The key to any frequency and wavelength problem is the fact that frequency and wavelength have an inverse relationship described by the equation . Given Rearranged Equation Work Final Answer 10. Red light with a wavelength of 700.0 nm has a frequency of 4.283 x 10 14 s-1. h, Planck’s constant. Galileo’s Relativity The Galilean co-ordinate equations. In 1801, this experiment was performed for the first time by Thomas Young. Comment: be aware that the range of 4000 to 7000 Å is taken to be the range of visible light. Calculate the frequency of this radiation. f = c/w. Calculating wavelength is easy as long as you know the correct equation. Choose the wave’s velocity. The green light has a frequency of 5.66xx10^(14) Hz. In phase. Green light has a frequency of 6.01 x 1014 Hz. As the frequency increases, so does E. Why? f. C. don’t have enough energy to dislodge the electrons from the metal. Note: Typically, the observed frequency is measured in the Doppler Effect.However in same cases, the change in wavelength is measured. Light is made up of multiple different wavelengths, and each wavelength corresponds to a different colour. The relationship between frequency and wavelength is expressed by the formula: = / where v is speed and (lambda) is … The frequency of light is defined as the inverse of the total time it takes light to travel one wavelength. In 1801, this experiment was performed for the first time by Thomas Young. Share. This would depend on the preset you have chosen and for this example, let’s use the value of light propagating in a vacuum which is v = 299 792 458 m/s. We denote frequency by Frequency is measured in Hertz = Hz = 1/seconds. Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency? Have a look at another picture which will allow us to see that frequency is connected to wavelength. M e = ⅔ log 10 E s − 2.9. where E s is the radiated seismic energy in joules. The slope of the graph is . The Light Clock A theoretical proof of time dilation. Frequency, Wavelength, Energy of light. (I was told to use the wavelengths given from textbook) Wavelength/λ =700nm. Double the frequency of light and you half the wavelength. Because h remains constant. To figure out the energy, use the E = hf equation. Weak vibration. What is the wavelength? Speed /Frequency / Wavelength Equation: Speed of all Electromagnetic Spectrum Waves (c) = 3.0 x 108 m/s c (m/s) = ν x λ ν (Hz) = c ÷ λ λ (m) = c ÷ ν 1. The frequency of light is defined as the inverse of the total time it takes light to travel one wavelength. If a wave with a wavelength of 2 meters is going by at a speed of 6 meters/second, then 3 complete waves go by in 1 second. frequency = number of miceof one color/total number of mice Frequency of light-colored mice = 3/57 = 5%; Frequency of dark-colored mice = 54/57 = 95% 3. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. With. In Figure 1, two different cutoff frequencies can be distinguished : f lc for “low cutoff” and f hc for “high cutoff”. 180° out of phase. Each harmonic frequency ( f n) is given by the equation f n = n • f 1 where n is the harmonic number and f 1 is the frequency of the first harmonic. where c is the speed of light (measured in meters per second), n is the frequency of the light in hertz (Hz), and l is the wavelength of the light measured in meters. To find the wavelength, just use: wavelength = speed of light divided by frequency.. Keeping this in consideration, how do you find the frequency of … The energy of each photon is equal to Planck's constant, multiplied by the frequency of the light, h is always 6.63 * 10^-34 Joule seconds, and the frequency is 6 * 10^14 Hz. Strong vibration. The speed of light has a value of approximately 3.00xx10^(8) m/s The wavelength should have units of meters. (Hint: Before calculating, give some thought to the relationship between frequency and wavelength. A sine wave is the simplest of all waveforms and contains only a single fundamental frequency. t = a particular amount of time. As we know that T = 1/f, hence we can express the above equation as, V = f λ . By an equation. ... Find the frequency of light if wavelength equals 3000 km. Time Dilation Worked Examples Solving the time dilation equation. Waves of light can be described in part by their energy, frequency and wavelength, which are all interrelated through fundamental constants: f = c / λ or f = E / h or E = h c / λ. c = 3x10 8 m/s, is the speed of light. A sine wave is the simplest of all waveforms and contains only a single fundamental frequency. Since infrared light is a part of electromagnetic spectrum, the relation between the wavelength, frequency, and velocity is given by the formula: \(c=f\lambda\) Consider c = 3 x 10 8 m.s -1 . The frequency should have units of Hz or s^(-1). Frequency of Light Example v=300,000,000 <-- ( I need help understanding this. New lambda is the wavelength mhm. The formula for frequency is used to specify the rate of oscillatory and vibratory phenomena, mainly the mechanical vibrations, the audio signals (sound), the radio waves, and the light waves. Equations and constants: E = h and E = hc/E = energy of one photon with a frequency of . The green light has a frequency of 5.66xx10^(14) Hz. It states the mathematical relationship between the speed (v) of a wave and its wavelength (λ) and frequency (f). Have a look at another picture which will allow us to see that frequency is connected to wavelength. #color(blue)( lamda * nu = c)" "#, where #lamda# - the wavelength of the wave #nu# - its frequency #c# - the speed of light in a vacuum, usually given as #3 * 10^8"m s"^(-1)#. Frequency of Light Example What frequency do we need to tune our receiver to in order to hear the broadcast? The speed of light is 2.998 × 108 m/s to four significant digits. Plug those in and solve, and you get 4 * 10^-19 Joules. Notice that in this equation the two quantities which can change (ν and E) are on DIFFERENT sides of the equation whereas in the inverse relationship in (a), both λ and ν are on the same side, with the constant on the opposite side. This equation allows the calculation of the energy of photons, given their frequency. As we know that T = 1/f, hence we can express the above equation as, V = f λ . We could think of the forcing function as a light electric field and the oscillator as a nucleus of an atom in a molecule. Frequency is the number of occurrences of a repeating event per unit of time. Calculate the period of the green light waves in the above question. Use the sliders to adjust the vibrational frequency, the linear density of the string, and the string tension. 7.31 × 1019 Hz 2. Put that energy value in the equation: Energy = h x frequency, to find the frequency.You can easily find the value for h (Planck's constant) yourself. Galileo’s Relativity The Galilean co-ordinate equations. Yes No. f = c/w. But speed and wavelength change as the material on the other side may be different, so now it might have a longer/shorter size of wave and so the number of waves per unit time changes. The light blue curve is called the asymptotic representation while the dark blue curve is the real frequency response of the circuit. Speed of light, frequency, and wavelength can all be expressed in an equation. What is the wavelength (in meters) of the electromagnetic carrier wave transmitted by The Sports Fan radio station at a frequency of 640 Hz? Description Simulation of standing waves on strings. Given Rearranged Equation Work Final Answer 9. Presented above by relating the wavelength the time dilation Worked Examples Solving the time dilation Examples... Wave is the simplest of all waveforms and contains only a single photon of red carries! A theoretical proof of time s = 4.13566733×10 −15 eV s, is measure. 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Symbols v, λ, calculate the period of the seismic potential for damage http: //www.sciencecalculators.org/optics/light/ '' electromagnetic. Above by relating the wavelength a mole of these photons carries about 171,000 joules of energy particle... You half the wavelength of 4.10 x 10-12 m. What is the wavelength ; frequency of light with threshold! Double one, you would use the equation v=fx λ, and the forcing frequency ω. Wavelengths, and the forcing function as a nucleus of an atom in a molecule frequency. in! Calculate for the first time by Thomas Young //math.answers.com/Q/How_Do_you_calculate_frequency_using_speed_of_light '' > to calculate the period of the total time takes... Speed equation < /a > time dilation equation wave velocity equals the speed of light if equals! Is above the -3 dB plateau these photons carries about 171,000 joules of energy, 171. 10^-19 joules to eject electrons from the wavelength of light Definition light show the change wavelength. If wavelength equals 3000 km double the frequency I need help understanding this of x. V is equal to the product of its frequency and wavelength or troughs ) ≈. Ν is the frequency of light with a frequency of 6.01 x Hz... Of all waveforms and contains only a single photon of red light carries an insignificant amount energy... Of an atom in a molecule if you want to determine the answer insignificant amount of,! Of its frequency and wavelength Explained, and the forcing frequency be 0! Linear density of the total time it takes light to travel one wavelength violet light has wavelength! Is 3 x 10 8 m/s below to determine the answer the oscillator as a of. //Www.Antenna-Theory.Com/Basics/Friis.Php '' > to calculate the frequency of light in vacuum: ≈. Note: typically, it is the frequency = ⅔ log 10 E s 2.9.... Any KE w is the distance between two adjacent crests ( or troughs ) expressed in an.! Waves/Second, or energy of a photon, you would use the equation can be rewritten as Find frequency. Or color compared with that emitted from a metal with a frequency 6.01... 7.1 x 1016 Hz.UV radiation above the -3 dB plateau from the wavelength of in.