Mirror Definition and 656 Threads

Homework Statement Where do you put an object in front of a concave mirror of focal length 10cm to produce an image that is inverted and 2.5 times greater than the object? Homework Equations \frac{1}{f}=\frac{1}{P}+\frac{1}{Q} Where: Q=Image distance from mirror P=Object's...

I saw a clever aftermarket rear backup mirror on a minivan recently, and I'd like to buy one for my Suburban. It's about 9" in diameter, and attaches to the rear door of a minivan or SUV at the door seam along the side near the top. This makes it visible through the rear window, so you can...

Homework Statement A lens of focal length 0.8m is 1.0 m to the left of a mirror of focal length -0.500m. An object is placed 1.00 m to the left of the lens. Light goes through the lens, bounces from the mirror, and goes through the lens again, this time from the right. Homework Equations...

Shiny lawn spheres placed on pedestals are convex mirrors. One such sphere has a diameter of 40 cm. A 12 cm long robin sits in a tree 1.5 m from the sphere. (a) Where is the image of the robin? (b) How long is the image? f=R/2 to find radius 1/v=1/f-1/u to find image distance (the mirror...

Homework Statement Below is a {MATLAB}code for Bragg mirror. How can I implement the code to create an FP resonator? Homework Equations The Attempt at a Solution %User input parameters num_layers = input('The Number of Layers in the structure = '); r_index1 = input('refractive...

Homework Statement While you were looking at the reflection of your feet in a plane mirror, you saw a dark spot on the glass. Assuming your height is 1.50 m, and that the eyes are located 0.1 m below the top of the head (a) What is the distance between the spot and the floor? (b)...

Homework Statement Given the following information: convex mirror, focal length (f) = 12.5 metres, height object (ho) = 5 metres, height image (hi) = 1 metre. Find distance object (do) and distance image (di). Homework Equations 1/f = 1/do + 1/di Magnification= -hi/ho = di/do...

Homework Statement An ant is 1.03 cm tall and stands 4.90 cm in front of an unknown mirror. To its surprise the ant sees an its image which is 4.43 cm tall! What is the the distance to the image? What is the focal length of the mirror? Homework Equations The mirror equation: 1/p + 1/q = 1/f...

Homework Statement I've done physics in a non-english medium and I want to know what is the technical term to call the incident where the image is flipped vertical through a mirror. I mean if we stand infront of a mirror and raise the right arm, the mirror image shows we're raising the left...

Homework Statement For self study, I've been trying to understand my convex mirror. Some online instruction I've been following states that if an incidence ray (red line in my model, below) parallel to the principal axis (black line) hits a convex mirror (full curvature outlined in black...

Hi all, If I place an object far away from a converging mirror or lens and start to move it closer, I note that I get an inverted, real image that steadily grows in size. As the object crosses the focal point the image becomes incredibly large and blurry and then flips upright and begins to...

I saw a previous thread on this forum that asked about the practical usage of a one way sphere ball and after reading through it I've come to terms with an idea that uses such an object in a very efficient manor. If you take your one way mirror sphere and wire solar panels on the interior of...

Homework Statement a) Despite the diverging lens with focal length f we observed object which is perpendicular to the optical axis (Figure 6 in the article ,,5. Rozptylka a zrcátko"). To what distance from the diverging lens we have to put the subject to be scaled twice? (cross-magnification Z...

Homework Statement Hi! I'm having a problem with one assignment and I would really need som help. The question is: The Chandra X-ray telescope is used for observations in the 0.1-10 keV range. Focal length is 10 m, max mirror radius is 0.6 m. What is the largest reflection angle in the...

Homework Statement Finding lightpaths with given starting and ending points via one or more mirrors. In those kind of problems you try image someone pointing a laser with a very narrow beam at a certain direction to the mirror, so it will reach point B. For example: You are seeing a square...

Homework Statement Please note that this is an extension of this question here: https://www.physicsforums.com/showthread.php?p=4571995#post4571995**Questions** Mirrors A and B with the space between them, including the bird, are part of the real world. Those are all a part of a basic cell...

a mirror reflection Homework Statement Create a set-up, as shown in the Figure, consisting of two mirror tiles (A and B) and a bird face, facing to the right . Make sure the two mirrors are perpendicular to the table and parallel to each other. The situation shown is a front view of the...

Homework Statement A. Draw accurately in the figure the light beam that goes from Object A to eye B after being reflected on the mirror. It must be consistent with the mirror principle! B. At question A. you may have connected the point behind the mirror (A') with eye B. And found the...

Homework Statement What is meant by this: "When mirroring a source in a plane mirror, it looks like the rebounding light rays come from a virtual source at the back of the mirror." I will illustrate this with a question: The figure shows a light source A, from an ordinary light bulb, that...

1. Make a sketch copy of the diagram below and indicate clearly the position and nature of the image formed by the mirror. Draw rays corresponding to light coming from the open circle, and mark any relevant angles. You can see the picture they mean in the attachment. 3. My attempt at the...

http://www.lasertechn.com/index.php/toroidal-mirrors in the figure, what does S’s – for the sagittal plane means? the distance between the image point and the sagittal plane ?? I see in some papers,they use toroidal mirror to collimate the beam from a point source, how does this happen and...

Imagine mirror image of a cell - built from a scratch using mirror images (enantiomers) of molecules of the original cell. It should work as standard one, but use e.g. L-sugars instead of our D-sugars: article. Some possible applications: - doubling the space of possible enzymes we could...

Hello, I need some information about spherical mirrors that I can't find in internet or this forum. How to calculate the amount of light that is focused in the mirror's focus point depending on the mirror's area and the amount of light emited by the source? If that light is reflected by...

Scenario: Entropy of the system or say the Universe is at its maximum, and there's a parabolic mirror floating in space with an object at its focus. Due to CMBR the object at focus will heat above the CMBR. Oh! Is there something wrong?

From looking at the Wikipedia entry on string theory I gather that it is found that any given physical model implies two Calabi-Yau spaces. Perhaps one space gives rise to a sector of particles with left-handed weak interactions and the other gives rise to a sector with right-handed weak...

Homework Statement A particle P is moving in a straight line with velocity u=10 m/s along the ground. Its line of motion makes angle θ=60° with the X axis drawn on the ground. A flat mirror oriented perpendicular to the ground as well as the X axis is moving with constant velocity of v=20...

Homework Statement An object is 12.0 cm in front of a convex mirror. When the convex mirror is replaced with a flat mirror, the image distance is 5.0 cm farther away from the mirror. What is the focal length of the convex mirror? Homework Equations f=-1/2R 1/do+1/di=1/f The...

Homework Statement The image of an object seen in a mirror is twice its actual size. The orientation of the image is the same as that of the object. If the object distance do is 1.7 m, what is the focal length of the mirror? Homework Equations 1/do+1/di=1/f m=-di/do The Attempt...

Many nations are developing hi-energy laser weapon. My question is, what if target is coated with mirror like coating? Can laser (since laser is still light) penetrate mirror? If it can then how is it possible? Regards

Homework Statement As shown in the figure, a man is running towards left with constant velocity of 7 m/s. Also, a flat vertical mirror is moved to the right with constant velocity of 9 m/s. Calculate the relative velocity between the man and his image. Express your answer in...

If a piece of mirror is observed under a high magnification optical microscope, then what would one see??

A rotating mirror with 16 sides was used to measure the tine it took light to travel 3.5km to a concave mirror and back. At what frequency did the rotating mirror need to turn to make 1/16th of a rotation in the time it took light to travel to 3.5km and back again? im having a bit of...

I was reading about how a plane mirror reflects light and would like confirmation I have the right theory. It says that the metal coating of a mirror is a conductor in electrostatic equilibrium which means the electric field is zero. As the electromagnetic wave hits the mirror the electrons...

Question In many department stores, large plane mirrors have been placed high on walls or on projections from ceilings. These may be one-way mirrors that are designed to allow one-way surveillance of the store. From one side, this surface looks like a mirror, but from the other side, the...

Homework Statement The image of a tree just covers the length of a plane mirror 3.80 cm tall when the mirror is held 40.0 cm from the eye. The tree is 20.0 m from the mirror. What is the height of the tree? Homework Equations m=y'/y, s=s'=20m (from problem statement) The Attempt...

What is the current state of the hypothesis of mirror matter today? Are there any experimental data or theoretical arguments that exclude it by now, or is it still considered viable among physicists?The relationship between mirror matter and ordinary matter is different from matter-antimatter...

I saw Jurassic Park 3d today and started tinkering with the glasses after I got home. Here, I noticed that if I close one eye and look in a plane mirror that the 'lens' with the closed eye is always clear and the 'lens' with the open eye is always dark. I understand that Real-d 3d works by...

When a charge is placed next to an uncharged conductor, a mirrored image of that charge is created on the other side of the uncharged conductor. The mirrored image charge will have an equal and opposite magnitude to the original charge. For example, if there was a 1C point charge 1m away from...

I am trying to interface a detector system to a FT-IR spectrometer. The spectrometer uses off-axis parabolic mirrors to focus light in the center of a sample compartment, where it diverges and again strikes an off axis parabolic mirror, focusing it on a detector. I would like to place a plane...

I don't really know where this topic belongs. Let's say you're an ugly asymmetrical person, with your right hand much larger than the left. A 4th dimensional being removed you and "flipped" you in the 4th dimesion, then put you back. Would you come back with a large right hand...

Homework Statement A collimated laser beam of power P = 106 Watt illuminates a 100%-reflecting micromirror at an angle of incidence of θ=30 for duration of = 0.015 seconds. Prior to laser illumination, the mirror is at rest. What is the mass of the mirror m if it acquires velocity of 1...

1. A spherical mirror is used to form an image 5 times as tall as an object, on a screen positioned 5.0m from the mirror. a) Describe the type of mirror required b) Where should the mirror be positioned relative to the object 2. M = (Di)/(Do) & 1/(Di) + 1/(Do) = 1/(F) 3. I have...

Hi guys, I'm wondering about exactly if there is some sort of range that a dichroic mirror would reflect, like a green mirror would reflect between 532nm - 600nm or something. I'm pretty sure a green dichroic mirror doesn't only reflect only 532.00000 nm and not 533 nm or something. But...

Homework Statement A +15 cm focal length lens and a flat mirror are 45 cm apart (the mirror is to the right of the lens and can be treated as a concave mirror with an infinite focus length). There is an intermediate image 30 cm to the right of the lens (15 cm to the left of the mirror) with...

So gravity bends space, and black holes bend space in a loop. Is it possible for there to be a gravitational field somewhere in space, just strong enough, that it bends the light emitted by our system back to us so we could see ourselves?

Hello. I have got basic question for you. Can you explain it simply? Why are the letters in a mirror overturned on left-right and not upside-down? Thanks. And sorry for my bad English.

Hi, I recently learned that to find the tangent at a point on any curve, you can simply place a mirror on that point and reflect the part of the curve on one side of that point such that the reflection flows smoothly into the other part of the curve on the other side. Once this is done, draw a...

Hello, I have a doubt about the high frequency response of the MOSFET (or BJT as well) differential couple in the case it's polarized by a current mirror. Here's a picture of my issue (it shows the semi-differential circuit of a MOSFET differential couple with a "small" common mode ac input...

If you had box where the inside was lined with mirrors and you closed the box in daylight, would inside of the box contain the light and be lit up? (Assuming no light was absorbed the edges or elsewhere).

Hi I'm new here. Been interested in physics all my life and understand it quite well. Been reading a book about Einstein which lead to a question I've been pondering. What happens if a mirror, that is traveling near the speed of light, has a beam of light pointed at it? What is the status of the...