減少光污染創意燈光裝置STEM設計比賽
Dark-sky-friendly Lighting Fixture STEM Competition
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「愛迪生的對與錯 – 照明的利與弊」公眾講座 暨「減少光污染創意燈光裝置STEM設計比賽」簡介會 Public seminar “Let there be light – benefits AND harm” cum briefing of “Dark-sky-friendly Lighting Fixture STEM Competition”

自一百多年前電燈發明以來,電燈的普及令人們的晚間生活變得更加便利,改革了人類的社會和文明。照明科技以前所未有的速度急速發展,造就了各種照明系統的出現,應用在愈趨多元化的用途。照明不但保障人身安全,亦促進晚間商業、娛樂和社交等活動,對我們的個人和社會帶來重大的貢獻。可是,濫用照明引致光污染,浪費能源之外更破壞大自然及人類的生活環境,導致健康隱患,也令美麗的星空消失。

究竟愛迪生的電燈泡如何演進成現時各樣的照明系統?現時流行的LED是如何發光的?藍光是否有損健康?香港和世界其他地方的光污染情況如何?怎樣能夠設計避免加劇本港光污染的照明?我們如何平衡運用照明的利弊?是次公眾講座由香港大學的工程師和科學家主講,探討以上問題之餘,邀請大家思考照明的未來,歡迎各位參與。

講座亦會簡介「減少光污染創意燈光裝置STEM設計比賽」。比賽鼓勵中學生利用STEM(科學、科技、工程、數學)知識設計戶外燈光裝置,以減少光污染的不良影響為目標。

日期:2018年12月8日(星期六)
時間:10:00 – 12:00
地點:香港大學本部校園周亦卿樓 LG1樓C演講廳(CBC)
對象:師生及公眾
語言:廣東話(輔以英語)
費用:全免
內容:
- 認識光污染、光污染在香港和全球的實況、光污染對大自然環境、生態和健康的不良影響(簡報文件)
- 認識燈光裝置、發光原理和燈罩的應用、以防光污染的燈光裝置建立更理想的生活環境(簡報文件)
- 比賽詳情、減少光污染燈光裝置製作、如何進行光污染研究(簡報文件)

講者:
- 香港大學電機電子工程系龐敏熙副教授
- 香港大學物理系首席講師潘振聲博士
登記:填寫網上表格。成功登記的人士將會獲電郵通知。

The spread of electric lighting over a century ago revolutionized our society and civilizations, making it possible for us to conduct all kinds of activities at night. The science and technology of lighting had grown in significant speed ever since, leading to a huge variety of lighting systems with diverse range of applications. These lighting allow us to safely conduct various economic, recreational and social activities at night, bringing huge benefits to individuals and societies. However, excessive lighting can also cause light pollution. Not only does it represent a waste of energy, light pollution damages our environment, impacts our health and destroys our starry dark sky.

How did the light bulb of Thomas Edison evolve to all kinds of lighting devices available now? What is the mechanism behind the popular and widely used LED light? Does blue light damage our health? What is the condition of light pollution in Hong Kong and all around the world? How to design lighting to reduce light pollution in Hong Kong? How should we balance the benefits and harms brought by the light we use? This public seminar, conducted by engineers and scientists from HKU, will discuss all these questions. We welcome you to come join us to explore how to better use light in our daily lives and in our society in the future.

We would also introduce The “Dark-sky-friendly Lighting Fixture STEM Competition,” which encourages secondary school students to use the knowledge of STEM (Science, Technology, Engineering and Mathematics) to design a dark-sky-friendly lighting fixture to reduce possible adverse effects of light pollution.

Date: 8 December 2018 (Sat)
Time: 10:00 – 12:00
Venue: CBC, LG1/F, Chow Yei Ching Building, HKU main campus
Target audience: school groups and general public
Language: Cantonese (supplemented by English)
Fee: free of charge
Contents:
- basic of light pollution, the current status of light pollution in Hong Kong and around the world
- adverse impacts of light pollution on the natural environment, biosphere and human health
- basic of lighting, theory of operation and the application of light shield
- build a better living environment by adopting dark-sky-friendly outdoor lighting fixtures
- details of the competition
- tips for making light-pollution friendly lighting
- how to conduct research on light pollution

Speakers:
- Dr Bryan M.H. Pong, Associate Professor, Department of Electrical and Electronic Engineering, HKU
- Dr Jason C.S. Pun, Principal Lecturer, Department of Physics, HKU
Register: Fill in the online register form. Successful applicants will be notified by email.