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Tufte's analysis of a NASA PowerPoint slide is included in the Columbia Accident Investigation Board’s report -- including an engineering detail buried in small type on a crowded slide with six bullet points, that if presented in a regular engineering white paper, might have been noticed and the disaster prevented.
According to Boutelle, the word slidecast is a portmanteau of "Slide show" and "podcasting". [10] Slidecasts allowed users with uploaded PowerPoint, Keynote or PDF presentations to synchronize them to mp3 audio. [12] The audio synchronization process could be started using the editor's "Edit slidecast" link.
A slide is a single page of a presentation. A group of slides is called a slide deck. A slide show is an exposition of a series of slides or images in an electronic device or on a projection screen. Before personal computers, they were 35 mm slides viewed with a slide projector [1] or transparencies viewed with an overhead projector.
The relation between theory and facts is, however, not simple. Theory … must always be a priori to the observations of facts. Indeed, facts as part of scientific knowledge have no existence outside such a frame. … If theory is thus a priori, it is, on the other hand, a first principle of science that facts are sovereign.
In contemporary operation, PowerPoint is used to create a file (called a "presentation" or "deck") containing a sequence of pages (called "slides" in the app) which usually have a consistent style (from template masters), and which may contain information imported from other apps or created in PowerPoint, including text, bullet lists, tables ...
A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. The theory of biological evolution is more than "just a theory".
In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 paper, On the Electrodynamics of Moving Bodies , the theory is presented as being based on just two postulates : [ p 1 ] [ 1 ] [ 2 ]
Newton's laws are often stated in terms of point or particle masses, that is, bodies whose volume is negligible. This is a reasonable approximation for real bodies when the motion of internal parts can be neglected, and when the separation between bodies is much larger than the size of each.