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Why do you put slides upside down in a slide projector to see them right side up?
Wiki User
∙ 12y ago
The lenses flip the image (right to left too).
You could build a system of mirrors to do the job, but it's cheaper to just load the slides upside down.
Note that your eye also flips the image that you see ... but your brain re-flips it so that you see the world right side up.
Here's the explanation. Think of the ray of light that goes from the bottom of your slide, through the centre of the lens and on to the screen. Because it goes through the lens centre, where the front and back lens surfaces are parallel it is not deflected (bent) in any way and so just goes straight on. Similarly, the ray of light from the top of your slide going through the lens centre finishes up at the bottom of the screen. The curved surfaces of the lens are there to make sure that all rays from a single point on the slide meet up at the same point on the screen. So what is on the topmost part of your slide appears at the bottom of the screen, and vice versa.
Wiki User
∙ 12y ago
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Why are the slides inserted upside-down into the slide projector to see them right side up?
As light travels through a convex lens (used in most slide projectors), the light and slide image are turned upside-down. Therefore, in order to appear correctly on screen, the image must enter the lens upside-down, which would then be inverted by the lens to appear right-side up. **** Furthermore, they are reversed left to right. What applies to the vertical holds true for the horizontal. The above holds true for any type of slide projector that performs similar to a Kodak carousel. However, the cube projector (Bell & Howell?) was different because the image bounced off of a mirror before going through the lens. I believe those slides were inserted into the cube right side up, but backwards (left to right), but I'm not sure.
What does the Design Templates option on the Slide Design pane help you do?
Change the background of all slides.
What is when solid surfaces slides surfaces slide over each other the kind that occurs?
sliding friction.
How do you scan 35 mm slides?
Use a Epson RX620 flatbedscanner with builtin slide scanning ability. There are three ways, and that's one of them. They also make "slide scanners." These are flatbeds big enough just to accept a slide, and they've usually just got a little slot in the front to put it in. The best quality comes from drum scanners.
What are the basic elements that make up a slide show presentation?
There are the slides themselves. On the slides you will have text and/or graphics. You will have basic transitions and animations. You may have other elements, such as music and video. It will depend on the presentation you are trying to create.
What is slide projector?
A projector that projects images from 35mm slides.
Why are the slides inserted upside-down into the slide projector to see them right side up?
As light travels through a convex lens (used in most slide projectors), the light and slide image are turned upside-down. Therefore, in order to appear correctly on screen, the image must enter the lens upside-down, which would then be inverted by the lens to appear right-side up. **** Furthermore, they are reversed left to right. What applies to the vertical holds true for the horizontal. The above holds true for any type of slide projector that performs similar to a Kodak carousel. However, the cube projector (Bell & Howell?) was different because the image bounced off of a mirror before going through the lens. I believe those slides were inserted into the cube right side up, but backwards (left to right), but I'm not sure.
Can i use a slide projector at my wedding to do a slide show of my father and I?
Slide projectors are considered "old technology", but if you have slides and a projector, showing them would emphasize that you and your dad predate PowerPoint. And that's not a bad thing.
Why does the image seem to move in the opposite direction to the way the slide was moved?
Because the lense of a projector inverts the image, you put the slide in upside down to view it right side up.Iin the process of inverting the image, up becomes down and right becomes left..
How do you show slides?
The term is usually one word "slideshow" or hyphenated slide-show for a computerized sequence of displays as originally done using a slide projector. (a typical tool for the presentations is Microsoft PowerPoint)
MS powerpoint how to add slides?
We can add power point slides to the left. Creating a new slide can be done by right clicking and new slide.
How do you Add and Delete Slides?
If you are asking "How do you Add and Delete Slides" in Microsoft Office PowerPoint, you simply right click on the desired slide in the slide viewer menu to the left of the page and select "New Slide" or "Delete Slide".
What are the reasons why image under the microscope move in the opposite direction?
Because the lense of a projector inverts the image, you put the slide in upside down to view it right side up.Iin the process of inverting the image, up becomes down and right becomes left..
How does a slide projector work?
A bright light lights the slide (a prepared positive cut from the original film). The light travels through a lens to focus it and on to a screen. There are many mechanisms to change slides, from manual insertion, to rotary and linear slide trays.
What does slides mean in photography?
Before the days of digital photography cameras could take negative film or positive slide film. The slide film was produced directly as a coloured translucent image and this image could be put in a projector and shown enlarged on a screen. I still have many hundreds of slides.
When your car slides on ice do you turn into or out of the slide?
Into the slide. If the back end is going right, turn the wheel right. If you turn out of the slide you'll end up doing circles.
Does a trumpet have a slide?
tubas have multiple slides, and one tuning slide
