Today Importance - 4th May
4-May-1783
After the death of Hyder Ali, Tipu Sultan was installed as the ruler of Mysore in a general ceremony at Bednoor. He fought the Second Mysore War against the British. He defeated many British generals like Braithwaite and Colonel Bailey. Tipu Sultan signed the Treaty of Mangalore on 11 March 1784, which came to be known as the Treaty of Mangalore.
4-May-1799
Tipu Sultan was killed in battle against 5,000 British soldiers who attacked and destroyed his capital, Srirangapatna.
4-May-1832
The fortnightly paper 'Darpan' continued to be published as a weekly.
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4-May-1849
Birth of Bengali writer and poet Jyotirindranath Tagore.
4-May-1854
The first postage stamp was officially issued from Calcutta where the first modern post office was established.
4-May-1923
Birth of famous film director Mrinal Sen.
4-May-1932
Many were arrested as Congress agents for picketing the Bombay Post Office on the occasion of Gandhi Divas.
4-May-1935
Dalip Kaur Tiwana, an extraordinary educationist and essayist, was brought into the world in the town of Ribon, Punjab.
4-May-1957
Death of great historian Roy Chowdhury Hemchandra.
4-May-1959
Nehru dismissed recommendations that India and Pakistan settle their disparities and structure a typical coalition against Socialist China.
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4-May-1960
Washington, I.K. signs wheat deal with India for largest US food sale
4-May-1980
Establishment of Coal Miners' Day.
4-May-1989
Renowned Bengali writer Ashutosh Mukherjee passed away.
4-May-1990
The Supreme Court has ordered the central government to set up a tribunal to resolve the Carvery water dispute between Tamil Nadu and Karnataka.
4-May-1992
India and Russia signed a five-year agreement on trade and economic cooperation.
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4-May-1993
Income tax exemption limit increased to Rs 30,000; Duty has been reduced on some medicines.
4-May-1993
Santosh Yadav is the main Indian lady to climb Everest two times.
4-May-1994
Fourth developmental launch of ASLV. The 113 kg Stretched Rohini Satellite Series (SROSS-C2) was launched by the fourth developmental flight of ASLV-D4 from Sriharikota. It conveys two logical payloads, a Gamma Beam Burst (GRB) try and an Impeding Expected Analyzer (RPA). It is still in service.
4-May-1995
The fourth ASLV-D4 was launched from Sriharikota, successfully placing the SROAS-C2 satellite into orbit.
4-May-1998
India has been placed on US special 309 watch list.
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DAY OF THE YEAR
Star Wars Day
Kentucky Derby
Wildfire Community Preparedness Day
Anti-Bullying Day
World Give Day
National Renewal Day
Petite And Proud Day
Join Hands Day
National Ampersand Day
National Fitness Day
National Candied Orange Peel Day
Firefighters’ Memorial Day
Print Day in May
World Labyrinth Day
Free Comic Book Day
Beer Pong Day
National Homebrew Day
World Naked Gardening Day
National Scrapbook Day
National Orange Juice Day
K.I.N.D Day
International Firefighters’ Day
45 Day
Coeliac Awareness Month
Red Cross Week
National Physical Education and Sport Week
National Small Business Week
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Celebrating National Calendar Awareness Month
Introduction:
National Calendar Awareness Month, observed in January, serves as a time to reflect on the importance of calendars in our daily lives. From ancient civilizations to modern societies, calendars have played a crucial role in organizing time, commemorating events, and shaping cultural traditions. In this descriptive exploration, we embark on a journey to celebrate the rich tapestry of time represented by calendars, exploring their diverse forms, cultural significance, and enduring impact on human civilization.
The Origins of Timekeeping:
1.1 Ancient Calendars:
The concept of measuring time through calendars dates back to ancient civilizations such as the Sumerians, Egyptians, and Mayans. These early calendars were primarily based on lunar or solar cycles, reflecting the celestial movements observed by ancient astronomers.
1.2 Development of Calendar Systems:
Over time, various calendar systems emerged, each tailored to the specific needs and cultural practices of different societies. From the Babylonian calendar to the Roman calendar, these systems laid the foundation for the modern calendars we use today.
The Gregorian Calendar:
2.1 Historical Background:
The Gregorian calendar, introduced by Pope Gregory XIII in 1582, is the most widely used calendar system in the world. It replaced the Julian calendar and implemented changes to the calculation of leap years, resulting in a more accurate alignment with the solar year.
2.2 Structure and Function:
The Gregorian calendar consists of 12 months, 365 days in a common year, and 366 days in a leap year. It serves as the standard calendar for civil purposes, providing a framework for organizing business, administrative, and social activities. READ MORE
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Types of Chain and Which One to Buy
Understanding Different Types of Chains: A Comprehensive Guide to Choosing the Right One
Introduction:
Chains are ubiquitous in our daily lives, serving various purposes from securing valuables to propelling vehicles. However, not all chains are created equal. They come in a myriad of types, each designed for specific applications. Whether you're a professional in need of heavy-duty chains for industrial use or a homeowner looking for a reliable option for your bicycle, understanding the different types of chains is crucial. In this comprehensive guide, we'll explore the various types of chains available in the market and help you make an informed decision about which one to buy.
Roller Chains:
Roller chains are perhaps the most common type, known for their durability and versatility. They consist of inner and outer plates connected by cylindrical rollers. These chains are widely used in industrial machinery, motorcycles, bicycles, and even in some automotive applications. Roller chains come in various sizes and configurations, offering different load capacities and speed capabilities. When choosing a roller chain, factors such as pitch, roller diameter, and material composition need to be considered based on the intended application.
Leaf Chains:
Leaf chains, also known as balance chains, are characterized by their flat, interlocking links resembling leaves. They are primarily used in applications requiring high tensile strength and minimal stretching, such as forklifts, cranes, and hoists. Leaf chains are ideal for vertical lifting applications due to their ability to support heavy loads without elongating excessively. When purchasing leaf chains, factors such as pitch, width, and material grade play a significant role in ensuring optimal performance and longevity.
Timing Chains:
Timing chains are critical components in internal combustion engines, responsible for synchronizing the rotation of the crankshaft and camshaft. Unlike timing belts, which are made of rubber and require periodic replacement, timing chains are typically made of metal and last the lifetime of the engine. They are designed to withstand high temperatures and constant stress, ensuring precise engine timing for optimal performance. When selecting a timing chain, compatibility with the engine specifications and durability are essential factors to consider.
Drag Chains:
Drag chains, also known as cable carriers or energy chains, are specialized chains used to guide and protect cables and hoses in dynamic motion applications. They are commonly found in industrial automation equipment, CNC machines, and robotics, where continuous movement of cables is required. Drag chains prevent tangling, abrasion, and damage to cables by providing a guided pathway and maintaining proper cable tension. When choosing drag chains, factors such as size, bending radius, and environmental conditions need to be taken into account to ensure reliable cable management.
Bicycle Chains:
Bicycle chains are designed specifically for transmitting power from the pedals to the wheels in bicycles. They come in various speeds to accommodate different gear configurations, such as single-speed, 6-speed, 7-speed, and more. Bicycle chains are typically made of steel and feature outer plates, inner plates, rollers, and pins. The choice of bicycle chain depends on the type of bicycle (road bike, mountain bike, etc.) and the desired performance characteristics (durability, weight, efficiency). Regular maintenance, including cleaning and lubrication, is crucial for prolonging the lifespan of bicycle chains and ensuring smooth operation.
Anchor Chains:
Anchor chains are heavy-duty chains used in maritime applications for anchoring ships and vessels. They are designed to withstand high loads and harsh marine environments, including corrosion from saltwater exposure. Anchor chains consist of interconnected links with swivels or shackles at the ends for attaching to anchors and anchor windlasses. The size and strength of the anchor chain depend on the size and displacement of the vessel, as well as the anchoring conditions (depth, seabed composition). Proper inspection and maintenance of anchor chains are essential for maritime safety and reliability.
Conclusion:
Choosing the right type of chain depends on various factors such as the intended application, load requirements, environmental conditions, and budget constraints. Whether you're selecting a chain for industrial machinery, automotive use, recreational activities, or maritime operations, understanding the characteristics and specifications of different chain types is essential for optimal performance and safety. By considering these factors and consulting with experts if necessary, you can confidently select the most suitable chain for your specific needs, ensuring efficiency, reliability, and longevity.
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