'Ring of Fire' solar eclipse watchers should use safe viewing equipment on Dec 26: Debiprosad Duari
Kolkata, Dec 25: When the annular solar eclipse takes place on December 26, sky watchers should use safe viewing equipment and proper techniques to view the celestial event as the infrared and ultraviolet rays of the Sun can cause severe retinal damage, a senior astronomer has said.
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the Sun for a viewer on Earth.
An annular solar eclipse takes place when the moons apparent diameter is smaller than that of the Suns and blocks most of the Suns light. This causes the Sun to look like an ring (annulus) of fire, Debiprosad Duari, the Director, Research and Academic of MP Birla Institute of Fundamental Research, MP Birla Planetarium, said.
Partial phases of the solar eclipse will be visible from all over the country in varying magnitude depending upon the geographical position.
One should not look directly to the Sun for even a little period without proper protection. Even when 99 per cent of the surface of the Sun is covered by the moon during partial eclipse, the remaining light is still intense enough to damage the eye, Duari told PTI.
Proper solar filters with certified appropriate optical density against radiation which are safe to the eyes should be used in front optical devices and the naked eye, he said.
Aluminised mylar films of approved thickness and transmissivity coated with black polymer are the safest for use in solar goggles that one generally uses for eclipse viewing, he said.
Welders glass number 14 is a safe material as solar filter for direct viewing of the solar disc, the researcher said.
According to him, the best method to view the solar eclipse will be to use a pinhole camera or a telescopic projection on a suitable surface.
Use of unsafe filters like smoked glass, polarising filter, sun glasses, photographic neutral density filters, colour films are not advised to view the solar phenomenon, he said.
Thursday's eclipse will be visible in Saudi Arabia, Qatar, United Arab Emirates, Oman, India, Sri Lanka, Malaysia, Indonesia, Singapore, Northern Mariana Islands, and Guam.
Population centers in the path of the annularity include Udhagamandalam, Kozhikode, Coimbatore, Jaffna, Trincomalee, Singapore, Singkawang and Guam, Duari said.
In the Indian sub-continent, the annularity phases will be seen within a narrow path grazing the southern Indian peninsula through Karnataka, Kerala and Tamil Nadu before crossing the Bay of Bengal for northern Sri Lanka.
The people of the southern part of the country will be fortunate to see a greater part of the partial solar eclipse because of the geometry of the eclipse path. But every Indian will get an opportunity to see at least a partial eclipse. In India the maximum duration of the annularity phases will be just over 3 minutes, he said.
The beginning of the eclipse can be first seen from the Arabian sea coast of Oman at around 7:59 hours IST and the annular eclipse will become first visible in west of Bahrain at 09:06 hours IST, Duari added.
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UK PM Keir Starmer takes ‘China matters’ message on first Beijing visit
London (PTI): “Like it or not, China matters to the UK,” is the message British Prime Minister Keir Starmer is taking on his visit to Beijing on Wednesday, accompanied by a 60-strong business and cultural delegation.
Downing Street said the visit, which will also cover Shanghai, reflects the UK’s “clear-eyed and realistic” approach to China in terms of opportunities and challenges they pose by continuing to pursue cooperation while “maintaining guardrails” when it comes to the country’s national security.
The Labour Party government is keen to highlight its re-engagement with China with this first visit in eight years, coming close on the heels of a ministerial go-ahead for its controversial new “mega embassy” in London.
“For years, our approach to China has been dogged by inconsistency – blowing hot and cold, from Golden Age to Ice Age. But like it or not, China matters for the UK,” Starmer said in a pre-visit statement.
“As one of the world’s biggest economic players, a strategic and consistent relationship with them is firmly in our national interest. That does not mean turning a blind eye to the challenges they pose – but engaging even where we disagree.
“This is what our allies do, and what I will do: delivering for the public, putting more money in their pockets and keeping them safe through pragmatic, consistent cooperation abroad,” he said.
The UK PM is set to meet President Xi Jinping and Premier Li Qiang in Beijing on Thursday for talks on trade, investment and national security, before travelling to Shanghai for a range of engagements with British and Chinese businesses.
Accompanied by a delegation of leading UK-based businesses, including Tata Motors owned Jaguar Land Rover, sporting institutions, museums and theatre groups, Starmer is expected to push for access in areas such as the financial services sector, creative industries and life sciences.
“However, he will be clear that we will not trade economic cooperation for our national security. He will raise the areas where we disagree with China – being clear that we will always defend our national security and where viewpoints differ, frank and open dialogue is of vital importance,” Downing Street said.
Describing China as the world’s second largest economy, a crucial player in global supply chains and a growing military power, the UK said it is important to engage with its third-largest trading partner which supports 3,70,000 British jobs.
“We want to see trade flourish between us. From financial services to advanced manufacturing and the global energy transition, the UK’s strengths increasingly align with the rapidly evolving Chinese economy,” said Peter Kyle, the Business and Trade Secretary travelling with Starmer.
“The first duty of government is security, and we protect ourselves best through active engagement and pragmatic cooperation, not by shutting the door,” he said.
The visit follows the 2025 Economic and Financial Dialogue (EFD) that the UK’s Department for Business and Trade (DBT) claimed secured 600 million pounds in immediate benefits and the first UK-China Joint Economic and Trade Commission (JETCO) since 2018.
“The UK’s world-leading financial services sector is a cornerstone of our economy. With deep and liquid markets, and the FTSE hitting all-time highs, there are real opportunities for mutually beneficial cooperation with China which supports jobs for working people and growth for businesses across Britain,” said Lucy Rigby, Economic Secretary to the Treasury, also part of the ministerial delegation.
The Opposition Conservatives have criticised Starmer’s approach to China, amid human rights concerns and espionage fears. “Starmer has already surrendered to the Chinese Communist Party over their plan for a spy-hub super embassy in the heart of our capital,” said shadow foreign secretary Priti Patel.
“The evidence is overwhelming that China poses a serious threat to our national security and it is clear Starmer is going to China without any leverage. He lacks the backbone to stand up for Britain and is bending over backwards to appease Beijing,” she said.
Following his trip to China, Starmer is set to travel to Tokyo to meet with Japanese Prime Minister Sanae Takaichi to reinforce the UK-Japan partnership, said to be worth over 100 billion pounds and supporting 2,00,000 UK jobs.
