Who invented the modern Ballpoint Pen? [#66]

Biro Brothers

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Biro Brothers

Mark Elliot Zuckerberg
Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes.

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Mark Elliot Zuckerberg
Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes.

Digboi refinery, now a division of Indian Oil Corporation, had a capacity of about 0.65 million tonnes per year as of 2003. Digboi is now Headquarter of Assam Oil Division of Indian Oil Corporation Limited.

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Digboi refinery, now a division of Indian Oil Corporation, had a capacity of about 0.65 million tonnes per year as of 2003. Digboi is now Headquarter of Assam Oil Division of Indian Oil Corporation Limited.

Nitipal, also known as Nitai, was the last king of the Chutiya dynasty. He ruled alongside his legendary wife, Queen Sadhani.

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Nitipal, also known as Nitai, was the last king of the Chutiya dynasty. He ruled alongside his legendary wife, Queen Sadhani.

Chaklong is the traditional and culturally rich marriage ceremony of the Ahom people, an indigenous community of Assam, India.

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Chaklong is the traditional and culturally rich marriage ceremony of the Ahom people, an indigenous community of Assam, India.

While animals like bulls, elephants, rhinoceros, and tigers were commonly depicted on Harappan seals. Cow, camel, horse, and lion were not depicted on seals. Unicorn (bull) was the animal most commonly represented on the seals.

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While animals like bulls, elephants, rhinoceros, and tigers were commonly depicted on Harappan seals. Cow, camel, horse, and lion were not depicted on seals. Unicorn (bull) was the animal most commonly represented on the seals.

The vibrant yellow color of a ripe papaya is primarily attributed to the presence of carotenoid (caricaxanthin) pigments. As the fruit ripens, the green chlorophyll, which is dominant in unripe fruits, breaks down. Simultaneously, specialized cell organelles called chromoplasts synthesize and accumulate these yellow and orange carotenoids, such as caricaxanthin and beta-carotene. These pigments are responsible for a wide range of yellow, orange, and red hues found in many fruits and vegetables.

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The vibrant yellow color of a ripe papaya is primarily attributed to the presence of carotenoid (caricaxanthin) pigments. As the fruit ripens, the green chlorophyll, which is dominant in unripe fruits, breaks down. Simultaneously, specialized cell organelles called chromoplasts synthesize and accumulate these yellow and orange carotenoids, such as caricaxanthin and beta-carotene. These pigments are responsible for a wide range of yellow, orange, and red hues found in many fruits and vegetables.

Jatinga is a small village in the Dima Hasao district of Assam, India, known for a peculiar phenomenon where large numbers of migratory birds die mysteriously during the monsoon season.

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Jatinga is a small village in the Dima Hasao district of Assam, India, known for a peculiar phenomenon where large numbers of migratory birds die mysteriously during the monsoon season.

Ignited Minds is a book by Dr. APJ Abdul Kalam, the former President of India and also known as the Missile Man of India for his work in development of missiles and launch vehicles. In this book Dr. Kalam talks about his dream of developed India.

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Ignited Minds is a book by Dr. APJ Abdul Kalam, the former President of India and also known as the Missile Man of India for his work in development of missiles and launch vehicles. In this book Dr. Kalam talks about his dream of developed India.

United Nations Development Programme (UNDP) The Human Development Report (HDR) is an annual Human Development Index report published by the Human Development Report Office of the United Nations Development Programme (UNDP).

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United Nations Development Programme (UNDP) The Human Development Report (HDR) is an annual Human Development Index report published by the Human Development Report Office of the United Nations Development Programme (UNDP).

Bal Gangadhar Tilak, also known as Lokmanya Tilak, said, "Freedom is my birth right and I shall have it" in Belgaum in 1916. Tilak was a leader of the Indian independence movement and is also known as the "Father of Indian Unrest". His slogan, "Swaraj is my birth-right and I shall have it," inspired Indian freedom fighters and gave fresh life to the liberation cause.

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Bal Gangadhar Tilak, also known as Lokmanya Tilak, said, "Freedom is my birth right and I shall have it" in Belgaum in 1916. Tilak was a leader of the Indian independence movement and is also known as the "Father of Indian Unrest". His slogan, "Swaraj is my birth-right and I shall have it," inspired Indian freedom fighters and gave fresh life to the liberation cause.