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完成时间大约为12 小时

建议:5 hours/week...

英语(English)

字幕:英语(English)

100% 在线

立即开始,按照自己的计划学习。

可灵活调整截止日期

根据您的日程表重置截止日期。

完成时间大约为12 小时

建议:5 hours/week...

英语(English)

字幕:英语(English)

教学大纲 - 您将从这门课程中学到什么

1
完成时间为 3 小时

Atomic interactions

Welcome to the MOOC! This week, we will drill down and examine the world of atoms. By first understanding the structure of atoms, we can then look at how radiation interacts with them. In this module, we will also unpack the two kinds of radiation: particulate and electromagnetic. We will then take our first glimpse at the electromagnetic spectrum.

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11 个视频 (总计 75 分钟), 4 个阅读材料, 2 个测验
11 个视频
Pre-course self-reflection exercise3分钟
Introduction to Module 11分钟
Atomic structure6分钟
Understanding waves8分钟
Understanding electromagnetic waves10分钟
The electromagnetic spectrum12分钟
Radiation interacting with matter, Part 17分钟
Radiation interacting with matter, Part 25分钟
Alpha and beta particles11分钟
Module 1 conclusion3分钟
4 个阅读材料
How to navigate the course5分钟
Overview of the assessments and activities5分钟
A map of our journey across the electromagnetic spectrum5分钟
Module 1 further readings10分钟
2 个练习
Test yourself: Pre-course knowledge quiz20分钟
Assessment 1 - Module 1 quiz30分钟
2
完成时间为 2 小时

Longwave radiation

This week, we begin our journey across the electromagnetic spectrum, starting at the long wave radiations. These are essentially radio waves, which cover a wide range of frequencies and properties, and infrared waves. Long wave radiations are not ionising and are therefore not carcinogenic, however there are still many misconceptions about them. Come explore the many applications of long wave radiation in everyday life and dispel the myths surrounding some of them.

...
7 个视频 (总计 55 分钟), 3 个阅读材料, 1 个测验
7 个视频
Who discovered radiation?9分钟
ELF radiation10分钟
Radio frequency radiation9分钟
Microwave radiation8分钟
Infrared9分钟
Module 2 conclusion2分钟
3 个阅读材料
The wonderful world of radio waves5分钟
What is the Cosmic Microwave Background?10分钟
Module 2 further readings10分钟
1 个练习
Assessment 2 - Module 2 quiz30分钟
3
完成时间为 2 小时

Light as radiation

We continue on our journey across the electromagnetic spectrum. Next stop: visible light and ultraviolet radiation. We will investigate how ionising radiations are able to interact with our atoms and the kinds of damage they can subsequently have on our bodies. We will also examine how our bodies repair these kinds of damage and (in most cases) protect us from their harmful effects.

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6 个视频 (总计 39 分钟), 5 个阅读材料, 1 个测验
6 个视频
Visible radiation9分钟
Ultraviolet radiation9分钟
Biological effects of ionising radiation8分钟
Biological repair pathways7分钟
Module 3 conclusion2分钟
5 个阅读材料
Rainbows of the night5分钟
Why is the sky blue?10分钟
Gene mutations and natural selection5分钟
Why do people have different skin colours?10分钟
Module 3 further readings10分钟
1 个练习
Assessment 3 - Module 3 quiz30分钟
4
完成时间为 2 小时

Ionising radiation

This week we go further down the electromagnetic spectrum to the range with the smallest, most energetic frequencies: X-rays and gamma rays. We will explore how these radiations are produced, the fascinating histories behind their discoveries, plus how they're useful in medical imaging. We will also discuss the link between ionising radiations and cancer, and examine the concept of personalised risk.

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7 个视频 (总计 45 分钟), 4 个阅读材料, 1 个测验
7 个视频
X-rays8分钟
Gamma rays7分钟
Radiation Protection8分钟
Personalised risk6分钟
Encouraging the practice of justification7分钟
Module 4 conclusion2分钟
4 个阅读材料
Can black holes emit radiation?5分钟
What does "radiation dose" mean?10分钟
Cultural perspectives on cancer10分钟
Module 4 further readings10分钟
1 个练习
Assessment 4 - Module 4 quiz30分钟

讲师

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Mark McEntee

Associate Professor
Faculty of Health Sciences
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Ernest Ekpo

Dr
Faculty of Health Sciences

关于 悉尼大学

The University of Sydney is one of the world’s leading comprehensive research and teaching universities, consistently ranked in the top 1 percent of universities in the world. In 2015, we were ranked 45 in the QS World University Rankings, and 100 percent of our research was rated at above, or well above, world standard in the Excellence in Research for Australia report....

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