Hydrogen has been regarded as a low-carbon energy carrier in recent years. In the process of combating climate change and transitioning to a low-carbon economy, governments and energy companies around the world, upon spotting the potential of hydrogen, have committed to explore the possibilities of utilising hydrogen fuel and launched related development strategies. Such policies have attracted the attention of lobbyists in the industry, investors and governments , who hoped that hydrogen can become an alternative to fossil fuels.....

"I tend to partition my life into three compartments: childhood years in a remote village in the province of Henan in central China, schooling years in Hong Kong, and the years since I came to attend college in the United States," said Daniel Chee Tsui, the 1998 Nobel Laureate in Physics, in the autobiographical sketch published by the Nobel Foundation.…

Crowned as the "Father of Fibre Optics", "Father of Fibre Optic Communication" and "Godfather of Broadband", the 2009 "Nobel Laureate in Physics, Charles Kuen KAO is generally regarded as one of the most significant and influential contributors to engineering in modern times. His "groundbreaking achievements concerning the transmission of light in fibres for optical communication" was instrumental to the explosive development of the age of the Internet..…

Modern physics had its beginnings about a century ago with the birth of quantum mechanics. Over the past few decades, scientists have built on knowledge of electromagnetism to master the laws of the weak and strong interactions....

Both COVID-19 and climate change have exposed the human society to global, systemic and complex crises that are disrupting all aspects of our life, prompting us to carry out relevant scientific research, take effective actions to mitigate and respond to the disturbances as well as the serious impacts on vulnerable groups. As COVID-19 was wreaking havoc around the globe, greenhouse gas emissions experienced a significant drop, revealing an opportunity for us to fix such intricate system - increasing our resilience to both the pandemic and climate change, which could only be achieved with green recovery measures…

In the article on "Early History of the Hong Kong Observatory" published in the July 2021 issue of the HKLF Newsletter, we introduced the history of the Observatory from the time around the establishment of the Observatory to World War II. We now introduce the history and development of the Observatory since World War II…

Since 1841, Hong Kong became an important port of trade. In order to ensure smooth port operations and safe navigation of ships, there was a need to provide accurate time service…

In the previous issue, we learned that to meet the needs of ocean navigation, the British invented the marine chronometer to help captains accurately ascertain the longitude of the ship to ensure safe navigation. In spite of the high accuracy of the marine chronometers, they needed to be calibrated regularly, and this came to depend on a time service provided by major ports...