Units of length

Device-independent pixel

A device-independent pixel (also: density-independent pixel, dip, dp) is a unit of length. A typical use is to allow mobile device software to scale the display of information and user interaction to different screen sizes. The abstraction allows an application to work in pixels as a measurement, while the underlying graphics system converts the abstract pixel measurements of the application into real pixel measurements appropriate to the particular device.For example, on the Android operating system a device-independent pixel is equivalent to one physical pixel on a 160 dpi screen, while the Windows Presentation Foundation specifies one device-independent pixel as equivalent to 1/96th of an inch. As dp is a physical unit it has an absolute value which can be measured in traditional units, e.g. for Android devices 1 dp equals 1/160 of inch or 0.15875 mm. While traditional pixels only refer to the display of information, device-independent pixels may also be used to measure user input such as input on a touch screen device. (Wikipedia).

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Solar Powered Wireless Security Camera - Part 3

This is the installation of the Solar Powered Wireless Security Camera outside.

From playlist Solar Powered Projects

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Vernier caliper / diameter and length of daily used objects.

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From playlist Fine Measurements

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Crystalline vs Amorphous PV under artificial light - CFL

This is a response to a viewer that posed a question about solar panel performance under artificial light.

From playlist Solar Panel Reviews, Testing and Experiments

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Electronic measurement equipment and multimeters - Part 1

In this video series I show different measurement equipment (multimeters, etc) and why / how I use them. In later videos I'll explore different features and highlight pro's and con's. A list of my multimeters can be purchased here: http://astore.amazon.com/m0711-20?_encoding=UTF8&node=

From playlist Electronic Measurement Equipment

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LED mounted in a contact lens for possible virtual / augmented reality displays

Every so often, internet news aggregator sites run a story about a research group that put an LED into a contact lens, then inserted it into a rabbit's eye. I figured that I would try the same thing, but put the lens into my own eye. I accomplished this by laminating a coil of wire and an

From playlist Electronics

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Solar power monitoring and logging solution - Part 2

Using Excel to graph the output from the multimeters...

From playlist Electronic Measurement Equipment

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Solar panel performance shoot-out - Part 2

This is a performance test between two 55 watt solar panels, one is a mono-crystalline and the other is an Amorphous / thin film panel.

From playlist Solar Panel Reviews, Testing and Experiments

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IMT3673 Mobile Development: Lecture 3, UI/UX, part 1.

Lecture: User Interface Development topics. Input/Output, form factors, the need for resolution independence.

From playlist Archive - Mobile Development

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Working with Images and Notebooks on Your Hi-Res Display

This talk features Ian Hojnicki giving a brief overview of resolution independence and our support for it in Wolfram Language 12.1's user interface. Also discussed are some common issues that come up and how to go about fixing them.

From playlist Wolfram Technology Conference 2020

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IMT4306 Mobile Technology

Introduction to Mobile computing

From playlist Archive - Research in Mobile/Wearable Tech

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2D Graphics with the HTML Canvas - part 3 of 5

Part of a larger series on programming. Visit http://codeschool.org

From playlist 2D Graphics with the HTML Canvas

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Next Generation 3D Graphics on the Web

This talk will cover the latest updates for adding 3D to your web site. You'll learn how to use model-viewer and new features for rendering, AR, and interactivity. You'll also see some phenomenal sites created with three.js. Then you'll get an overview of the WebGPU API that will provide m

From playlist Web Animations

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Mario Figueiredo: ADMM in Imaging Inverse Problems: Some History and Recent Advances

Abstract: The alternating direction method of multipliers (ADMM) is an optimization tool of choice for several imaging inverse problems, namely due its flexibility, modularity, and efficiency. In this talk, I will begin by reviewing our earlier work on using ADMM to deal with classical pro

From playlist Analysis and its Applications

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Physics Lenses

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From playlist Physics

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Stanford Lecture: The Internal Details of TeX82 - Session 12 (July 30, 1982)

July 30, 1982 Professor Knuth is the Professor Emeritus at Stanford University. Dr. Knuth's classic programming texts include his seminal work The Art of Computer Programming, Volumes 1-3, widely considered to be among the best scientific writings of the century.

From playlist Donald Knuth Lectures

Related pages

Dots per inch | Unit of length