Ask Question, Ask an Expert

+61-413 786 465

info@mywordsolution.com

Ask Physics Expert

problem 1: For a blackbody, the frequency at which maximum energy is emitted is 3 x 1013 Hz:

A) Give a wave number for the wavelength of the infrared emission?

B) Determine the temperature of the blackbody?

C) Determine the total radiance emittance for the blackbody?

D) Consider  an  emitter  (with  an  emissivity  of  0.5)  at  similar  temperature  of  the blackbody (obtained from B). Find out the total power lost by this emitter if its area is 2 m2 ?

problem 2: Infra-Red Detectors and Optic Lens

Part A: An IR detector has an impedance of Z= (400 + j200) Ω. During the design tests the detector current is measured as 4 µA. Determine the output voltage of the detector?

Part B: By using a converging lens of focal length f = 10 cm, we want an object to appear on the screen twice as big as its original size. Where is the object to be placed in front of the screen (real image)?

problem 3: Digital Image

Part A: Determine the raw file size for an image of 80 rows and 100 columns, with pixels on 14 bits and with an extra row for the header?

Part B: The minimum and maximum values observed in the low-contrast 12-bit thermogram are 60 and 250, correspondingly. A pixel in the thermogram has been mapped to a new value of 4000 after linear stretching. Determine the value of the pixel before stretching?

Part C: Regarding filtering, image masking and convolution. Suppose we have the given Infra-Red image:

1135_infra red image.jpg

What filter would you use to remove the impulsive noise in the first row of the image (suppose 1 x 3 filter)?

What would the first row of the image be after filtering (suppose 1 x 3 filter)?

Physics, Academics

  • Category:- Physics
  • Reference No.:- M9495

Have any Question? 


Related Questions in Physics

In raising a 6400-n piano with a pulley system the movers

In raising a 6400-N piano with a pulley system, the movers note that, for every 3.0 m of rope pulled down, the piano rises 0.26 m Ideally, find the force required to lift the piano. Express your answer to two significant ...

A woman wishing to know the height of a mountain measures

A woman wishing to know the height of a mountain measures the angle of elevation of the mountaintop as 12°. After walking 1.23 km closer to the mountain on level ground, she finds the angle to be 15.8°. Find the height o ...

Question when striking the pike a predatory fish can

Question: When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.9m/s in 0.12s . a) What is the acceleration of the pike during this strike? Express your answer using two significant figures. ...

At equator earths radius is about 6370 km a plane flies in

At equator, Earths radius is about 6370 km. A plane flies in low altitude at constant speed of v=226 m/s. Plane can produce average deceleration of a=18,/s^2 when landing. How long in seconds would it take the plane to c ...

Question point charges q1 200 muc and q2 -200 muc are

Question: Point charges q1 = +2.00 (mu)C and q2 = -2.00 (mu)C are placed at adjacent corners of a square for which the length of each side is 1.00 cm. Point a is at the center of the square, and point b is at the empty c ...

Question the parking brake on a 2400kg cadillac has failed

Question: The parking brake on a 2400kg Cadillac has failed. and it is rolling slowly, at 1.2mph, toward a group of small children. Seeing the situation, you realize you have just enough time to drive your 1000kg Volkswa ...

Question during your summer internship for an aerospace

Question: During your summer internship for an aerospace company, you are asked to design a small research rocket. The rocket is to be launched from rest from the earth's surface and is to reach a maximum height of 940m ...

Question a slab of insulating material of uniform thickness

Question: A slab of insulating material of uniform thickness d, lying between -d/2 to +d/2 along the x axis, extends infinitely in the y and z directions. The slab has a uniform charge density ρ. The electric field is z ...

Question a rock is suspended by a massless string when the

Question: A rock is suspended by a massless string. When the rock is invacuum, the tension in the string is 39.2 N. When the rock iscompletely immersed in water, the tension is 28.4 N. When the rockis completely immersed ...

Question the power rating on a light bulb indicates how

Question: The power rating on a light bulb indicates how much power it would dissipate when it is hooked up to the standard household voltage of 120 V (this rating does not mean that the light bulb always dissipates the ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As