Data expansion:
Photos that are often viewed by projectors in slide show teaching. Most of these slides are shown by transparent positive projectors. Photos are called photographic slides and color photos are called color slides. There are no black-and-white reverse films. Therefore, the positive film is shot with negative film, almost all of which are taken with color reversal film. The mainstream is to fill in one by one with the size of 35 mm, and the rolled slides are called long slides.
Online slide show
The so-called online slide show is to read common electronic documents such as ppt, pptx, pdf, word, odf, dpt, key online through web technology, which avoids the trouble of installing software. Another advantage of online slide show is that it doesn't need to carry a mobile storage device with you, as long as there is a device with internet access, you can make slides.
So you can go out to give a speech and stay away from the threat of computer viruses. Online iWork suite in Apple iCloud cloud, Microsoft Office Web Apps and Google Docs all provide online reading and editing of slides. Common online slide platforms include Slide share abroad and Baidu Library Phantom Network of Slidesboom in China.
colour
Font color and background color: Black text with blue background can be clearly seen on the screen, but it is not clear when output as a slide show. White characters on a blue background or yellow characters on a black background will be very eye-catching.
Note that color is related to mood. Dark blue and gray give a sense of manpower and stability; Red generally means warning or emergency; Green represents life and vitality.
Colors can also affect the clarity of slides. Slides need to be shown in a dark room, so you need to use a dark background and light text. Blue, purple and green are suitable for background color, while white, yellow and red are suitable for foreground color. The golden rule of color: dark blue background, golden title, light blue subtitle, white text and golden bullet.