# pturp

## 23 Flips | 1 Magazine | 2 Following | 22 Followers | @pturp | Keep up with pturp on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “pturp”

### An Exact Value for the Planck Constant: Why Reaching It Took 100 Years

<i></i>Blog communicated on behalf of Jean-Charles de Borda.Some thoughts for World Metrology Day 2016Please allow me to introduce myself<br>I’m a man of …

Physics### Untangling the Tale of Ada Lovelace

(New York Public Library)Ada Lovelace was born 200 years ago today. To some she is a great hero in the history of computing; to others an …

### What Is Spacetime, Really?

A hundred years ago today Albert Einstein published his General Theory of Relativity—a brilliant, elegant theory that has survived a century, and …

### Mapping Total Solar Eclipse on March 20 2015

On March 20, a total solar eclipse will happen. Although unless you live in the north polar regions, you are unlikely to see much. You can map the …

Solar Eclipse### Showcase of Languages

Notes<p>This thread is open and unlocked only because the community decided to make an exception. Please <b>do not</b> use this question as evidence that you …

### Interactive Usage

Interactive Usage View as Video<p>Notes for Java programmers:<p>The Wolfram Language is interpreted, meaning any piece of code can be run immediately. Java …

### 3D puzzle of the trefoil knot and its fibrations via 3D printing

Hello Wolfram Community! I am Fred Hohman, a senior Mathematics and Physics student at the University of Georgia. I have been working under Dr. David …

### Step-by-step Solutions for Definite Integrals in Wolfram|Alpha

One of the most popular queries on Wolfram|Alpha is for definite integrals. So we’re especially excited to announce that Step-by-step solutions for …

### 1 + 2 + 3 + 4 + ⋯

The infinite series whose terms are the natural numbers <b>1 + 2 + 3 + 4 + ⋯</b> is a divergent series. The <i>n</i>th partial sum of the series is the triangular …

### Resources from European Wolfram Technology Conference 2014

TALKS, PRESENTATIONS & WORKSHOPS<p>Tuesday 27 May | First Floor, Dow and Jones Room<p>sessions before lunch<p>Opening Address (by Video)<p>Conrad Wolfram<p>CEO, …

### Apply Collatz Funtion to solve and print the answer

Good day to all!<p>The objective of my task is apply the collatz function for a number x1 and print the exact number of iterations until s1. I want to …

Mathematics### Solving the Knight’s Tour on and off the Chess Board—Wolfram Blog

I first came across the knight’s tour problem in the early ’80s when a performer on the BBC’s <i>The Paul Daniels Magic Show</i> demonstrated that he could …

### The ABCD of Divergent Series—Wolfram Blog

What is the sum of all the natural numbers? Intuition suggests that the answer is infinity, and, in calculus, the natural numbers provide a simple …

### Fast Introduction for Programmers

Spend a few minutes with this tutorial to get up to speed with the foundations of the Wolfram Language.<p>With 5,000 carefully integrated, built-in …

### Modeling Physics with the Wolfram Language

<i>Here’s another guest post from Allison Taylor at Wolfram Research. Today we’re looking at how to build simple physics models using the Wolfram</i> …

### There Was a Time before Mathematica…—Stephen Wolfram Blog

In a few weeks it’ll be 25 years ago: June 23, 1988—the day <i>Mathematica</i> was launched.<p>Late the night before we were still duplicating floppy disks and …

### Online reading seminar for Zhang’s “bounded gaps between primes”

In a recent paper, Yitang Zhang has proven the following theorem:<p><b>Theorem 1 (Bounded gaps between primes)</b> There exists a natural number such that …

### Talking about the Computational Future at SXSW 2013—Stephen Wolfram Blog

<i>Last week I gave a talk at SXSW 2013 in Austin about some of the things I’m thinking about these days—including quite a few that I’ve never talked</i> …