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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.

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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.


How do you beat pocket god episode 4 shake that app?

make pygmy unsteady make pygmy lose balance make pygmy slide make pygmy slide while sleeping make pygmy slide off island and drown generate earthquake turn upside down, pygmy fall into sky make pygmy hang upside-down turn upside-down and tap pygmy to lose grip and fall into sky thats all i know sorry

Related Questions

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.


How are slides held in place?

Slides are typically held in place in a presentation by a software program that displays the slides in sequence. In physical presentations, slides may be held in place by a projector or a projector screen. When using digital presentations, slides can be held in place by a remote control or presenter clicker that allows the speaker to advance the slides.


How do you use argus 538 slide projector?

To use the Argus 538 slide projector, first ensure it is properly set up on a stable surface and connected to a power source. Insert the slide tray, making sure the slides are oriented correctly, and adjust the focus knob to achieve a clear image. Turn on the projector, using the power switch, and adjust the lens to project the desired image onto a screen or wall. Finally, use the advance mechanism to switch between slides as needed.


What is the plural of slide?

The plural of the noun slide is slides.


What is the working principle of slide projector?

A slide projector works by shining light through a transparent slide containing an image and projecting that image onto a screen or surface. The light source inside the projector illuminates the slide, which is then magnified and focused through a lens to create a larger image for viewing. The slides are manually advanced to display different images in sequence.


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 is slide holder?

A slide holder is a device used to hold photographic slides in place for viewing or scanning. It typically has slots or frames that securely hold individual slides so they can be easily inserted into a projector or scanner without getting damaged.


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)


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.