Open Educational Resources | Pao Yue-kong Library, The Hong Kong Polytechnic University

Video

Why The US Military Made GPS Free-To-Use

This video explains how GPS works, security issues of GPS, and why US military GPS can be made free for use.

Subjects:: Land Surveying and Geo-Informatics
Keywords:: Global Positioning System Artificial satellites in navigation
Resource Type:: Video

Video

What is Water Hammer?

Hydraulic transients (also known as water hammer) can seem innocuous in a residential setting, but these spikes in pressure can cause major damage to large pipelines and industrial pipe networks. In this video, we briefly discuss how water hammer occurs and how engineers mitigate the effect.

Subjects:: Building Services Engineering
Keywords:: Water hammer Hydraulic transients Fluid mechanics
Resource Type:: Video

Video

What is Steam Hammer?

A few things that can go very wrong when you put steam in a pipe. We talked about the damaging effects of water hammer, but there’s another state of H2O equally if not more dangerous when put in pipes. In this episode, we’re talking about steam hammer and differential shock.

Subjects:: Building Services Engineering
Keywords:: Piping Fluid dynamics Pipelines
Resource Type:: Video

Video

What is Solar Power?

What are solar cells, and how do they work? Find out more about solar power - and learn how this renewable resource harnesses the power of the sun into usable energy.

Subjects:: Environmental Engineering and Building Services Engineering
Keywords:: Solar energy Renewable energy sources Photovoltaic power generation
Resource Type:: Video

Video

Welding 101

In general, and compared to other common building materials, metals have excellent mechanical properties. They are hard, tough, strong, and durable. As someone who occasionally works the wood, even I can admit that metals are a superior material in many regards. So you can see why it would be advantageous to have a way to connect them together, especially if you can do it in such a way that joint isn’t the weakest part of your assembly. That’s the goal of welding, and luckily, this is not something reserved for industrial factories and machine shops. From my own experiences so far, welding is something you might be able to do yourself as a hobby. And stay tuned till the end for some tips for getting started.

Keywords:: Welding
Resource Type:: Video

Video

The rise of 'fake news', manipulation and 'alternative facts'

How do we discern what is true and what is ‘fake news’ in the fast-paced age of social media and technology? Our technology editor David Grossman reports.

Subjects:: Statistics and Research Methods
Keywords:: Digital media -- Moral ethical aspects Media literacy Social media Journalism -- Social aspects Fake news
Resource Type:: Video

Video

Technology based tourism in future

A video showing technology based tourism in future

Subjects:: Hotel, Travel and Tourism
Keywords:: Information technology Tourism -- Computer network resources Tourism
Resource Type:: Video

Video

Renewable Energy 101

There are many benefits to using renewable energy resources, but what is it exactly? From solar to wind, find out more about alternative energy, the fastest-growing source of energy in the world—and how we can use it to combat climate change.

Subjects:: Environmental Engineering
Keywords:: Renewable energy sources
Resource Type:: Video

Video

Mechanics of Materials

These 56 tutorials cover typical material from a second year mechanics of materials course (aka solid mechanics). A solid understanding of statics and calculus is necessary to properly learn and grasp the concepts of solid mechanics.

Subjects:: Structural Engineering and Mechanical Engineering
Keywords:: Mechanics Strength of materials
Resource Type:: Video

Video

How to use Google reverse image search to fact check images

A quick demo of how Google's reverse image search tool can be used to fact check and research images. Have you ever wondered about the source or history behind an image? Google image search can help provide answers. Whether you're doing research or just curious, reverse image search offers a digital paper trail of where an image has appeared on the internet. All you need to do is drag and drop an image into the images.google.com search bar, paste a url into the search bar, or right click on an image when using the Chrome browser.

Subjects:: Statistics and Research Methods
Keywords:: Google (Firm) Internet searching Information literacy
Resource Type:: Video

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Why The US Military Made GPS Free-To-Use

What is Water Hammer?

What is Steam Hammer?

What is Solar Power?

Welding 101

The rise of 'fake news', manipulation and 'alternative facts'

Technology based tourism in future

Renewable Energy 101

Mechanics of Materials

How to use Google reverse image search to fact check images

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