A hollow cathode lamp has a lambda max of 1252 nm at 2473.15 kelvin. The spectral radiance is 1.86 x 10^10 J/m^3s. If the lamp is enclosed in a quartz envelope with a transmission factor of 0.92, what is the spectral emissivity?

A hollow cathode lamp has a lambda max of 1252 nm at 2473.15 kelvin. The spectral radiance is 1.86 x 10^10 J/m^3s. If the lamp is enclosed in a quartz envelope with a transmission factor of 0.92, what is the spectral emissivity?

Foundations of Astronomy (MindTap Course List)

14th Edition

ISBN:9781337399920

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter6: Light And Telescopes

Section: Chapter Questions

Problem 4P

See similar textbooks

Related questions

Q: A60-cm-diameter wheel accelerates uniformly about its center from 110 rpm to 270 rpm rpm in 5.08. A…

A: The initial angular velocity, ωi=110 rpm=2π60×110 rad/s=11.52 rad/s (using the conversion factor of…

Q: Calculate the acceleration of the masses Solution: Note that the masses have the same acceleration.…

Q: While hovering, a particular flying insect applies an average force equal to three times its weight…

A: Givenmass, m=1 gm =0.001 kgdisance, d=1.5 mm =0.0015 mstrokes,…

Q: Demonstration 1: Two identical positive point charges are located as shown in the figure on the…

A: Required direction of electric field at three points due to given system of two positive charges.

Q: Consider a thin hoop of mass (1.420 ± 0.001) kg and radius (0.250 ± 0.002) m. The moment of inertia…

Q: Problem 24.06. A laser emits monochromatic light (light of a single frequency). A 5 mW (milliWatt)…

Q: Consider the figures depicting rectangular pulses on a string. 하나다 3 Reference: Ref 17-1 5 Complete…

A: This question is based on waves topic. When pulse 2 and 3 are superimposed we will get the pulse 4…

Q: An apple of mass 0.10 kg is attached to a vertical spring with a force constant of 10.6 N/m. The…

A: Elastic potential energy of spring=12kx2 here x=10cm or 0.1m…

Q: A physicist directs a laser beam at right angles to the long face (or hypotenuse) of a 45°-45°-90°…

A: According to the figure , the light beam travels . To find = minimum index of refraction

Q: 8. Consider the 67.0 kg mountain climber. (a) Find the tension in the rope. (b) Find the force that…

Q: 3. An ball is thrown straight upward. Air resistance is negligible Show force vectors acting on ball…

Q: 1. Four point charges are placed on the xy-plane as shown. Calculate the net force acting on q2. -…

Q: As shown below, the eyes of a giraffe are a distance H₁ = 2.1 m above the ground and a distance L₁ =…

A: Given data: H1 =2.1 m L1 = 4.1 m H2 = 0.51 m We need to find the value of L2.

Q: can you please explain how you got 6 in the first part?

A: the question is about at which point the electric field due to charge combination is equal to zero.…

Q: Tarzan plans to cross a gorge by swinging in an arc from a hanging vine, as shown in the figure…

Q: Problem 25: Suppose light falls on double slits separated by 185 µm. Randomized Variables d=185 µm…

A: Given:- The double slits separated by the d = 185 μm The angle θ= 0.65°

Q: 14. Two monochromatic point sources of light, S₁ and S2, are shown below. They are initially in…

A: As the phase of S1 is increasingly delayed with respect to S2, the path difference between the two…

Q: Two spherical objects are separated by a distance of 1.77 x 103 m. The objects are initially…

Q: What is the surface integral in m2 a cube of side (3.71x10^1) cm?

A: To find the surface integral of a cube with a side length of s cm, we need to first calculate the…

Q: ! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

Q: Here is a long solenoid (coils of wire along a long cylinder) and an end view of the solenoid.…

A: Given Current in long solenoid is increasing with time in counterclockwise direction we have to…

Q: A 10⁹-F capacitor (1 nanofarad) is charged to 50 V and then disconnected. One can model the charge…

Q: An attractive force of 1500 N exist between a 900 nC charge and another charge. The two charges are…

A: Given:- Attractive Force(F) = 1500 N First Charge(q1) = 900 nC = 900×10-9 C…

Q: If you doubled the mass and doubled the radius of a planet, by what factor would g at its surface…

A: Given that doubled the mass and doubled the radius of a planet then to determine by what factor…

Q: 2. (a) Here is an insulating sphere with volume charge density (p), a radius (R), and total charge…

A: a

Q: You are playing basketball and would like to have an accurate shot using projectile motion. Suppose…

Q: A current of 7.6 A flows through a wire. Determine the number of electrons per second passing a…

Q: The acceleration due to gravity on Earth a. is the same at all locations on the surface of Earth b.…

Q: How many significant figures has the number 1086.035.

A: Question: How many significant figures has the number 1086.035

Q: A negative charge of q = -2.3 × 10-17C and m = 6.8 × 10-26 kg enters a magnetic field B = 1.1 T with…

Q: A car and a train move together along straight, parallel paths with the same constant cruising speed…

A: Kinematics of equation of motion: The kinematics of equation of motion refers to the mathematical…

Q: A 6.25 g (6.25 x 10^-3 kg) quarter sits 25 cm (2.5 x 10^-1 m) from the axis of rotation on a…

A: Given data: The mass is m = 6.25 g The time is t = 1.8 s The distance from the axis of rotation is…

Q: A 1.4x103 V/m electric field creates a 3.5x10¹7 elec/s current in a 1.2-mm-diameter aluminum

A: The current is 3.5*1017 electrons/s. Current is the amount of charge traveling through a conductor…

Q: 3. Four charges are located on the corners of a square of sides a = 4.5 cm as shown in problem 1.…

Q: Part 3: Michelson's speed of light apparatus As shown below, a student is scaling down Michelson's…

A: The distance between stationary mirror and rotating mirror=10.2m As the 3 sided mirror is available,…

Q: A 108-F capacitor (10 nanofarads) is charged to 50 V and then disconnected. One can model the charge…

Q: DATA TABLE 2 Purpose: To determine the magnitude of initial projectile velocity. Range (cm) Trial 1…

Q: A boy walks in the evening in the park with a flashlight with a power of 25 W . The flashlight bulb…

A: Given: Power of bulb P=25 W=25 J/s, Wavelength of light λ=490 nm=490×10-9 m, Distance from bulb R=17…

Q: A 5kg weight is attached to a pulley which hav radius 8.65cm. Through what angle (in degrues ) must…

Q: Joshua ran 4.25 laps of a soccer field in 7 minutes at a constant speed. It took Joshua x minutes to…

Q: A 1.4x10-³ V/m electric field creates a 3.5x10¹7 elec/s current in a 1.2-mm-diameter aluminum wire.…

A: Given data- Electric field E=1.4×10-3 V/m Current i=3.5×1017 ele/s Diameter of aluminium wire…

Q: 10. A piece of paper becomes electrically charged when a charged rod of plastic is placed close to…

Q: 9x = exp(-/Bhv) 1- exp(-ßhv) Derive the partition function for a single harmonic oscillator in three…

A: Required derivation of partition function for simple harmonic oscillator.

Q: A bus skids for a distance of 25 m with the road pushing on its tires with force of 2000 N as its…

A: Given data: The displacement is d = 25 m The applied force is F= 2000 N The mass of the bus is m =…

Q: Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless,…

A: Given Data:mass of first block m1 =3 kgmass of second block m2 =macceleration of first block a1=34g…

Q: Suppose a satellite orbits the Earth twice in sixty days. What is the period of the circular motion?…

A: Since the satelite orbits earth twice in 60 days , time taken to complete one orbit is 30 days…

Q: 2) A body of weight 300 N was resting on a rough plane inclined to the horizontal at an angle whose…

Q: At the origin, a particle has an initial velocity of 30 feet per second and moves along the x-axis.…

A: Given:- Initial velocity(u) = 30 ft/s Acceleration for t = 0 s to t = 5 s (…

Q: At 2200 degrees Celsius, the max wavelength for the Cs lamp is at 1252 nm. The measured spectral…

A: The spectral emissivity at the wavelength is ελ,T=Lλ,TσT4 Where (Lλ,T is the spectral radiance…

Q: A lemming running 2.87 m/s runs off a horizontal cliff. It lands in the water 5.32 m from the base…

Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Conclusion

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

At 2200 degrees Celsius, the max wavelength for the Cs lamp is at 1252 nm. The measured spectral radiance is 1.86 x 10^10 J/m^3s. If the lamp is enclosed in a quartz envelope with a transmission factor of 0.92, find the spectral emissivity for the Cs lamp.
The operating temperature of an indirectly heated filament of a vacuum tube is around 1050K. At what wavelength will it radiate maximum? Given b=0.288cm K.
Assuming that your surface temperature is 98.6°F and that you are an ideal blackbody radiator (you are close), find (a) the wavelength at which your spectral radiancy is maximum, (b) the power at which you emit thermal radiation in a wavelength range of 1.00 nm at that wavelength, from a surface area of 4.00 cm2, and (c) the corresponding rate at which you emit photons from that area. Using a wavelength of 500 nm (in the visible range), (d) recalculate the power and (e) the rate of photon emission. (As you have noticed, you do not visibly glow in the dark.)
What is the frequency of an ultraviolet photon with wavelength 91 nm?
Find the energy of (a) a photon having a frequencyof 5.00 x 1017 Hz and (b) a photon having a wavelengthof 3.00 x 102 nm. Express your answers in units of electronvolts, noting that 1 eV = 1.60 x 10-19 J.
Compute for the following wavelength of the following frequency: 5. 50Hz
A tungsten filament of a typical incandescent lightbulb operates at a temperature near 3000 K. At what wavelength is the intensity at its maximum?
What is the total emittance of a cesium lamp at 2473.15 K with a lambda max of 1171.38 nm at this temperature.
The maximum distance between Jupiter and Earth is about 968 million km. How long will a photon of light take to travel from Jupiter to Earth?
A CdTe planar wafer has an absorption coefficient of 3.2 × 104??−1for the light of wavelength 530 nm. Determine the minimum thickness the CdTe wafer has to be for 95% of this wavelength to be absorbed.
Calculate the wavelength of light, in nm, illuminating a barium surface if the threshold frequency of barium is 6.07×1014 Hz and the kinetic energy of the electron emitted is 1.31×10-18 J.
For a coefficient of 1.8 × 10^15 m−1 J^-0.5, at what wavelength is the absorption coefficient equal to 1000 cm-1 for GaAs at 300K.