wltrup/Physics-Relativity-for-non-physicists

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wltrup/Physics-Relativity-for-non-physicists

wltrup

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An essay about light, the appearance of objects, and the theory of relativity, for non-physicists.

iOS-Swift-Circular-Progress-View

This project has been deprecated.

iOS-Swift-Kaleidoscope

A simulation of a kaleidoscope, using UIKit Dynamics.

HTTPClient

An implementation of Dave DeLong's blog series on building a Swift HTTP framework.

Swift-WTUniquePrimitiveType

This project has been deprecated.

SwiftUI-TimingCurves

An app to explore animation timing curves in SwiftUI

Algs-Smoothing-Line-Segments

How to smooth a collection of points by interpolating them with Bezier curves.

Fiction-No-Time-Like-The-Present

Fiction

Short stories I've written over the years.

WTOpenSource

This repo collects in one place references to all my open-source contributions to development in Swift and for Apple platforms.

iOS-Swift-CGExtensions

This project has been DEPRECATED and replaced by separate libraries compatible with Swift 3.0. Please refer to WTOpenSource.

iOS-Swift-WTOnlineLinearRegressionDemo

A demo app for my WTOnlineLinearRegression library.

Physics

A collection of technical essays I've written over the years, on various topics in Physics.

Math-Principal-Component-Analysis

A review of PCA for a talk I gave in our research group at the UC Irvine’s Data Mining group.

Math-Sphere-Collision-Detection

How to analytically determine if two spheres will collide

ColorExtensions

Math-Solving-Polynomial-Equations

Complete analytical solution for general polynomial equations of degrees 3 and 4.

Algs-Discrete-Half-Flux-Diameter

A colleague interested in astrophotography asked me for an algorithm to compute the half-flux diameter of an image.

Swift-WTOnlineLinearRegression

WTOnlineLinearRegression lets you perform linear regression on one-dimensional data sets, with or without variance on the dependent variable.

Swift-WTCoreGraphicsExtensions

A collection of useful additions to `CGGradient`, `CGPoint` and, especially, `CGVector`.

iOS-Swift-WTAutoLayoutExtensions

Extensions to UIView and UILayoutGuide to make it simpler and more natural to use layout guides, layout anchors, and the rest of the auto-layout machinery, with a consistent API and very little code.

Physics-The-Equilibrium-of-a-Tilted-Soda-Can

Did you know that you can balance a partially filled soda can when it's tilted? Here I analyse the mathematics of why that is possible.