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Why are submarines so slow?
Submarines are among the most fascinating and powerful machines in the world. They can dive deep into the oceans and perform various tasks, such as spying, attacking, exploring, or rescuing. However, they are also known for being very slow compared to other vehicles. The average speed of a submarine is around 5 to 10 knots, which is equivalent to 6 to 12 miles per hour. This is much slower than the speed of a car, which can travel at around 60 miles per hour. Why are submarines so slow? There are several reasons for this.
One reason is that submarines are designed to be stealthy and avoid detection, which requires them to move slowly to minimize the noise they make. Submarines use propellers or jet propulsion to move through the water, but these also create sound waves that can be picked up by sonar or hydrophones. The faster the submarine moves, the louder it becomes, and the easier it is for enemies to locate and track it. Therefore, submarines have to balance their speed and their stealth, and often choose to sacrifice the former for the latter.

Another reason is that submarines are bulky and heavy, and not designed for speed, but rather for endurance and carrying large payloads. Submarines have to carry a lot of equipment and weapons, such as torpedoes, missiles, mines, sensors, batteries, fuel, and crew. They also have to withstand the high pressure and low temperature of the deep sea. All these factors add weight and drag to the submarine, making it harder to accelerate and maneuver. Submarines are also limited by their power source, which can be diesel-electric or nuclear. Diesel-electric submarines have to surface periodically to recharge their batteries using air-breathing engines, which reduces their speed and stealth Nuclear submarines can stay submerged for longer periods of time, but they also generate more heat and noise.
Despite their slow speed, submarines are still an important part of modern warfare an

“As Steve Jobs said, 'The world is built by people no smarter than you and I. So why not go for something audacious? Something you are passionate about and just build it?'" Dr Sampriti Bhattacharyya

Dear all,

The British Council Schools team is pleased to announce the launch of the course Exploring gender equality in education on 11th of July on the FutureLearn platform.

The course is in English and accessible to all teachers globally.

Teachers will explore ways the curriculum and education systems can reinforce or challenge gender biases and gain approaches to make their school more gender-responsive.

The course runs over three weeks with about four hours study required per week. The course will stay open for six weeks and participants can join at any point during this time. It’s free of charge and participants who complete the course will receive a certificate.

Teachers can find more information and register here: https://www.futurelearn.com/courses/exploring-gender-equality-education

You can find promotional images and promotional messages for website, Twitter, Facebook, Instagram and WhatsApp here on the dedicated Teams channel: https://britishcouncil.sharepoint.com/:f:/s/FutureLearnMOOCs/Ehxj6m9kjvlKs9ipJW19BV8BICuAsMhOpc51aGTNDBhsqQ?e=HsRJQa

Best regards

Exploring Gender Equality in Education - Online Teaching Course - FutureLearn Build the skills and strategies to make your school more inclusive by recognising and responding to gender inequality with this online teaching course from the British Council.

What I have lived for by Henry David Thoreau
Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind. These passions, like great winds, have blown me hither and thither, in a wayward course, over a deep ocean of anguish, reaching to the very verge of despair.
I have sought love, first, because it brings ecstasy - ecstasy so great that I would often have sacrificed all the rest of life for a few hours of this joy. I have sought it, next because it relieves loneliness- than terrible loneliness in which one shivering consciousness looks over the rim of the world into the cold unfathomable lifeless abyss. I have sought it finally, because in the union of love, I have seen in a mystic miniature, the prefiguring vision of the heaven that saints and poets have imagined. This is what I sought, and though it might seem too good for human life, this is what- at least I have found.
With equal passion, I have sought knowledge. I have wished to understand the hearts of men. I have wished to know why stars shine. And I have tried to apprehend the Pythagorean power by which number holds sway above the flux. A little of this but not much, I have achieved.
Love and knowledge, so far as they were possible, led upwards toward the heavens. But always pity brought me back to the earth. Echoes of cries of pain reverberate in my heart. Children in famine, victims of torture by oppressors, helpless old people, a hated burden to their sons, and the whole world of loneliness, poverty and pain make mockery of what human life should be. I long to alleviate the evil, but I cannot, and I do suffer.
This has been my life. I have found it worth living, and would gladly live it again if the chance were offered me.

Fortune Favours the Brave! The story of Dr Julieth Gudo
From losing her parents at the age of 7to escaping child marriage at the of 12 to become a PhD graduate

Meet - Dr Julieth Gudo, she became an orphan at the age of 7. Stopped school after grade 7 and escaped child child marriage at the of 12.
When she lost her grandmother (guardian), she crossed the border of Zimbabwe to South Africa as a minor and found sanctuary at a refugee centre in Musina Limpopo for 8 years.
In collaboration with humanitarian organisations, the Centre ensured the children access education and that was an opportunity to change the life of Julieth, with 9 years of schooling lost, she started again, this time in Grade 11, she passed Grade 12 with distinctions . After obtaining a Bachelor of Laws (LLB) from University of Limpopo , she went on to read her Masters in Commercial Law at University of Cape Town and later on obtained a PhD in Commercial Law from University of Cape Town.

Her rise is a story of determination and power of education to change the lives of young people. Let us all celebrate the achievements of Dr Julieth Gudo. She will inspire many generations to come.

Prof. Stephen Adei Former Rector of GIMPA. A Ghanaian educationist, writer, economist, and motivational speaker. He is currently the chairperson of the National Development Planning Commission (NDPC) the Board Chairman of the Ghana Revenue Authority.

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