What is Epidiascope?

Question

An epidiascope is an optical projector that displays both opaque and transparent materials. Learn how it works, its uses, features, and benefits easily.

Neha Bhasin · Accepted Answer

The opaque projector, epidioscope, epidiascope or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. A system of mirrors, prisms and/or imaging lenses is used to focus an image of the material onto a viewing screen. Because they must project the reflected light, opaque projectors require brighter bulbs and larger lenses than overhead projectors. Care must be taken that the materials are not damaged by the heat generated by the light source. Opaque projectors are not as common as the overhead projector.

Neha Bhasin · Answer

Ephidiascope is a JavaScript library that enables the visualization of large sets of data in the browser . With over 1 billion rows and hierarchies, Ephidiascope can help you build interactive visualizations for multiple-dimensions. The library supports real-time queries and streaming data, which allows developers to get instant feedback on their queries. Ephidiascope is an open-source project has already caught the attention of many JavaScript enthusiasts. The project has been featured on Hacker News and tutsplus , where it was also described as a "must have".

Ephidiascope comes with 3 different approaches to creating your visualization: standard charts, interactive charts, or an interactive timeline.