Know the facts

 Edison light bulb Edison light bulbs , retroactively referred to as  antique light bulbs , and  vintage light bulbs , refer to carbon- or early  tungsten -filament  incandescent lamps , or modern bulbs reproducing their appearance. Most of these bulbs are reproductions of the wound filament bulbs made popular by  Edison Electric Light Company  at the turn of the 20th century. They are easily identified by the long and complicated windings of their internal filaments, and by the very warm-yellow glow of the light they produce. Original carbon-filament bulb from Thomas Edison's shop in Menlo Park. Light bulbs with a carbon filament were first demonstrated by Edison in October 1879. Carbon filament bulbs, the first electric light bulbs, became available commercially in 1879. In 1904 a tungsten filament was invented by Austro-Hungarians Alexander Just and Franjo Hanaman, and was more efficient and longer-lasting than the carbonized bamboo filament used pr...

 Srinivasa Ramanujan Srinivasa Ramanujan FRS was an Indian mathematician who lived during the British Rule in India. Though he had almost no formal training in pure mathematics, he made substantial contributions to mathematical. Born:  22 December 1887, Erode Died:  26 April 1920, Kumbakonam Spouse:  Janakiammal (m. 1909–1920) Awards:  Fellow of the Royal Society Education:  Trinity College (1919–1920), University of Cambridge (1914–1919) ,  Parents:  Komalatammal, K. Srinivasa Iyengar He is the one who discover this number(2520). During his short life, Ramanujan independently compiled nearly 3,900 results (mostly identities and equations). Many were completely novel; his original and highly unconventional results, such as the Ramanujan prime, the Ramanujan theta function, partition formulae and mock theta functions, have opened entire new areas of work and inspired a vast amount of further research. Of his thous...

 Skandamata Skandamātā  ( Sanskrit :  स्कन्दमाता ) is the fifth form of Hindu Goddess  Durga . Her name comes from  Skanda , an alternate name for the war god  Kartikeya , and  Mātā , meaning mother.   As one of the  Navadurga , the worship of Skandamātā takes place on the fifth day of  Navaratri .  Mantra सिंहासनगता नित्यं पद्माश्रितकरद्वया। शुभदास्तु सदा देवी स्कन्दमाता यशस्विनी॥ Sinhasangata nityam padmashritkardvya, Shubhdastu sada Devi Skandmata Yashswini. Weapon Lotus, Two hands holding Skanda Symbolism Skandamātā is four-armed, three-eyed, and rides on a lion. One of her hands is in the fear-dispelling Abhayamudra position while the other is used to hold the infant form of her son Skanda on her lap. Her remaining two hands are typically shown holding lotus flowers. She is light complexioned, and as she is often pictured seated on a lotus, she is sometimes referred to as Padamasani. It is believed that she awards devotees with...

 Kushmanda Kushmanda is a Hindu goddess, credited with creating the world with her divine smile. Followers of the Kalikula tradition believe her to be the fourth form of the Hindu goddess Durga. Her name signals her main role: Ku means "a little", Ushma means "warmth" or "energy" and Anda means "cosmic egg". Mantra सुरासम्पूर्णकलशं रुधिराप्लुतमेव च। दधाना हस्तपद्माभ्यां कूष्माण्डा शुभदास्तु मे॥ Weapon Lotus, Chakra, Kamandalu, Dhanusha (Bow), Arrow, Gada (Mace), Akshamala (Rosary), Jar of holy Elixir i.e. Sura and blood. Kushmanda is worshiped on the fourth day of the festival of Navratri (nine nights of Navadurga) and She is believed to improve health and bestow wealth and strength. Goddess Kushmanda has eight hands and because of that She is also known as Ashtabhuja Devi. It is believed that all the power to bestow Siddhis and Niddhis are located in her Jap Mala. It is stated that She created the whole universe, which is called Brahmanda (ब्रह्...

 Shailaputri Shailaputri  (शैलपुत्री), is the daughter of the Mountain King  Himavat , and is a manifestation of the Hindu Mother Goddess,  Durga .  She is the first  Navadurga  venerated during the first day of  Navratri , and is a reincarnation of Goddess  Sati . She is also known as Goddess  Parvati . Goddess Shailaputri (Parvati) is depicted with two hands and has a crescent moon on her forehead. She holds a trident in her right hand and a lotus flower in the left. She rides on the mount Nandi, the bull. Shailaputri is the Adi parasakti, who was born in the house of King of Mountains “Parvat Raj Himalaya”. The name “Shailaputri” literally means the daughter (putri) of mountain (shaila). Variously known as Sati Bhavani, Parvati or Hemavati, the daughter of Himavat - the king of the Himalayas. Mantra of Shailaputri: ॐ देवी शैलपुत्र्यै नमः॥ Om Devi Shailaputryai Namah॥ Prarthana or Prayer of Shailaputri वन्दे वाञ्छितलाभाय चन्द्रार्ध कृत...

 Brahmacharini Brahmacharini  ( Sanskrit : ब्रह्मचारिणी) means a devoted female student who lives in an  Ashrama  with her  Guru  along with other students.  It is also the name of the second aspect of the goddess  Durga  ( Parvati ).   The goddess is worshipped on the second day of  Navratri  (the nine divine nights of  Navadurga ). The goddess Brahmacharini wears white clothes, holds a  japa mala  in her right hand and  Kamandal , a water utensil in her left hand. The word brahmacharini stems from two Sanskrit roots: Brahma(ब्रह्म, shortened from Brahman), means "the one self-existent Spirit, the Absolute Reality, Universal Self, Personal God, the sacred knowledge". charini is the feminine version of one who is a charya(चर्य), which means "occupation with, engaging, proceeding, behaviour, conduct, to follow, moving in, going after". The word brahmacharini in Vedic texts means a female who pursues the sacre...

 Navaratri Navaratri is a Hindu festival that spans nine nights and is celebrated every year in the autumn. It is observed for different reasons and celebrated differently in various parts of the Indian cultural sphere. Theoretically, there are four seasonal Navaratri. Observances: Goddess Durga is worshipped Celebrations: 10 days (9 nights) Observed by: Hindus Related to: Vijayadashami, Dashain Also called: Navratri, Nauratri, Navarathri, Navaratra, Navratan, or Nauratan. Navaratri is a Hindu festival that spans nine nights (and ten days) and is celebrated every year in the autumn. It is observed for different reasons and celebrated differently in various parts of the Indian cultural sphere. Theoretically, there are four seasonal Navaratri. However, in practice, it is the post-monsoon autumn festival called Sharada Navaratri that is the most observed in the honor of the divine feminine Devi (Durga). The festival is celebrated in the bright half of the Hindu calendar month Ashvin, ...

 Pyramid A  pyramid  is a  structure  whose outer surfaces are triangular and converge to a single step at the top, making the shape roughly a  pyramid in the geometric sense . The base of a pyramid can be  trilateral ,  quadrilateral , or of any  polygon  shape. As such, a pyramid has at least three outer triangular surfaces . The  square pyramid , with a square base and four triangular outer surfaces, is a common version. The Great Pyramid of Giza (also known as the Pyramid of Khufu or the Pyramid of Cheops) is the oldest and largest of the pyramids in the Giza pyramid complex bordering present-day Giza in Greater Cairo, Egypt. It is the oldest of the Seven Wonders of the Ancient World, and the only one to remain largely intact. Egyptologists conclude that the pyramid was built as a tomb for the Fourth Dynasty Egyptian pharaoh Khufu and estimate that it was built in the 26th century BC during a period of around 27 years. Initially...

 Arabian Sea The Arabian Sea is a region of the northern Indian Ocean bounded on the north by Pakistan, Iran, and the Gulf of Oman, on the west by the Gulf of Aden, Guardafui Channel and the Arabian Peninsula, on the southeast by the Laccadive Sea, on the southwest by the Somali Sea, and on the east by India. Its total area is 3,862,000 km2 (1,491,000 sq mi) and its maximum depth is 4,652 meters (15,262 ft). The Gulf of Aden in the west connects the Arabian Sea to the Red Sea through the strait of Bab-el-Mandeb, and the Gulf of Oman is in the northwest, connecting it to the Persian Gulf. Geography The Arabian Sea's surface area is about 3,862,000 km 2  (1,491,130 sq mi). The maximum width of the sea is approximately 2,400 km (1,490 mi), and its maximum depth is 4,652 metres (15,262 ft). The biggest river flowing into the sea is the  Indus River . The Arabian Sea has two important branches — the Gulf of Aden in the southwest, connecting ...

 Chandika Asthan  Chandika Asthan  is a  Hindu  temple situated in  Munger , in the  India   state  of  Bihar .   It is one of the fifty-one  Shakti Peethas , places of worship consecrated to the goddess  Shakti . On the Northeast corner of Munger, Chandika Sthan is just two kilometers away from the Munger town. Being a Siddhi-Peetha, Chandika Sthan is considered to be one of the most sacred and sanctified temples, as important as the  Kamakshya temple  near  Guwahati .         Shiva carrying the corpse of Sati Devi The Chandika Asthan Temple is believed to be a Shakti Peetha, the divine shrine of Shaktism. The mythology of Daksha Yaga and Sati's self-immolation and Shiva carrying the corpse of Sati Devi is the story of origin behind the Shakti Peetha shrines. It is believed that Sati Devi's left eye has fallen here. King Karna Another legend connected with Chandika Sthan is regarding Kin...