---
title: "Relativity"
id: 13768
type: "product"
slug: "relativity"
url: "http://localhost/product/relativity/"
markdown_url: "http://localhost/product/relativity.md"
published_at: "2019-11-30T01:35:33+00:00"
modified_at: "2026-03-22T19:36:41+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Graphically demonstrates effects of relativistic velocities on length of a spacecraft plus time dilation effects. Demonstrates the \"twin paradox\" on trips to Alpha Centauri and the Andromeda Galaxy."
category:
  - name: "Math/Science"
    slug: "math-science"
    taxonomy: "category"
    url: "http://localhost/category/software/math-science/"
post_tag:
  - name: "Robert C. Moler"
    slug: "robert-c-moler"
    taxonomy: "post_tag"
    url: "http://localhost/tag/robert-c-moler/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Mathematics"
    slug: "mathematics"
    taxonomy: "genre"
    url: "http://localhost/type/mathematics/"
  - name: "Software"
    slug: "software"
    taxonomy: "genre"
    url: "http://localhost/type/software/"
company:
  id: 11234
  title: "Robert C. Moler"
  type: "company"
  url: "http://localhost/company/robert-c-moler/"
price: 11.95
date: 1983
rarity: "Uncommon"
articles:
  - article:
      id: 24391
      title: "Buyer’s Guide Supplement"
      type: "article"
      url: "http://localhost/article/buyers-guide-supplement/"
companies_products:
  - id: 11234
    title: "Robert C. Moler"
    type: "company"
    url: "http://localhost/company/robert-c-moler/"
---

Graphically demonstrates effects of relativistic velocities on length of a spacecraft plus time dilation effects. Demonstrates the “twin paradox” on trips to Alpha Centauri and the Andromeda Galaxy.