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2. Movie projector - Wikipedia

   en.wikipedia.org/wiki/Movie_projector

   Predecessors Simulation of a spinning zoopraxiscope An early projector and seats from a movie theater. The main precursor to the movie projector was the magic lantern.In its most common setup it had a concave mirror behind a light source to help direct as much light as possible through a painted glass picture slide and a lens, out of the lantern onto a screen.

3. Beam projector - Wikipedia

   en.wikipedia.org/wiki/Beam_projector

   Beam projector. A beam projector is a lenseless stage lighting instrument with very little beam spread. [1] It uses two reflectors. The primary reflector is a parabolic reflector and the secondary reflector is a spherical reflector. The parabolic reflector organizes the light into nearly parallel beams, and the spherical reflector is placed in ...

4. Overhead projector - Wikipedia

   en.wikipedia.org/wiki/Overhead_projector

   Overhead projector. An overhead projector (often abbreviated to OHP ), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view of a small document or picture to be shared with a large audience. In the overhead projector, the source of the image is a page-sized sheet of transparent plastic film ...

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. AOL Mail for Verizon Customers - AOL Help

   help.aol.com/products/aol-mail-verizon

   Learn how to update your settings to make AOL Mail look and feel exactly how you need it. Netscape Internet Service (ISP) · Jan 30, 2024. Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.

7. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   A 50-hour-life projection bulb, for instance, is designed to operate only 50 °C (122 °F) below that melting point. Such a lamp may achieve up to 22 lumens per watt, compared with 17.5 for a 750-hour general service lamp. Lamps of the same power rating but designed for different voltages have different luminous efficacy.