A bipin or bi-pin, (sometimes referred to as 2-pin, bipin cap or bipin socket), is a standard from the IEC for lamp fittings. These are used on many small incandescent light bulbs (especially halogen lamps), and on most fluorescent lights as well, where the filaments are involved in starting the tube when it is turned on.

Some lamps have pins placed closer together, preventing them from being interchanged with bulbs that are too high power, which may cause excessive heat and possibly fire. These are sometimes called "mini-bipin". Some of these, particularly in automotive lighting, have the pins bent back onto the sides of the base of the bulb, this is instead called a wedge base or socket.

The bi-pin base was invented by Reginald Fessenden for the 1893 World's Fair in Chicago. After Westinghouse won the contract to wire and illuminate the first electrified fair with Nikola Tesla's AC instead of archrival Thomas Edison's DC, Edison and his General Electric company refused to allow his patented Edison screw-base bulbs to be used. Westinghouse overcame this by inventing the bi-pin base for use at the fair.

Stephen Devassy (born 23 February 1981 in Ottapalam, Palakkad, Kerala) is an Indian pianist. He composes, sets tunes and arranges music for the Indian music industry.

Stephen Devassy started learning the piano at age 10; he entered the world of music under the guidance of Leslie Peter, who was his first teacher. He learned the organ and then was introduced to the piano by Fr. Thomas at Chetana Music Academy in Thrissur, where he completed his Eighth Grade examination conducted by the Trinity College of Music, London.

Stephen's first major break came when he was just 18, through Johny Sagarika, for whom he did the music orchestration of six songs on the album Ishtamannu. He then went as an accompanying artist to play the keyboard for Hariharan on his European tour. He has also accompanied the violin maestro L. Subramanian at the Lakshminarayana Global Music Festival.

At age 19, he started a music band called Seven, with singers Franco Simon and Sangeeth. A Hindi pop band, they released an album titled Yeh Zindagani.

Sandip Ray (Bengali: সন্দীপ রায় Shôndip Rae) (born 8 September 1954) is a film director living in the city of Kolkata, West Bengal, India. He is the only son of the noted Bengali director Satyajit Ray, and Bijoya Ray.

He started his professional career in film at the age of 22 as assistant director on his father's film Shatranj Ke Khiladi (The Chess Players, 1977). Prior to this he had aided his father's work in various capacities including still photographer on set. His own directorial debut was Phatik Chand (1983) -- the film received an award in the International Children's Film Festival in Vancouver.

Sandip Ray is also a noted photographer. He was the director of photography on Satyajit Ray's last three films, Ganashatru (An Enemy of the People, 1989), Shakha Proshakha (The Branches of the Tree, 1990) and Agantuk (The Stranger, 1991).

Sandip Ray also guided the children's magazine Sandesh, which was founded by his great-grandfather Upendrakishore Ray, and continued by his grandfather Sukumar Ray and his father Satyajit Ray. From 1992, after the death of Satyajit, Sandip was the Joint Editor of the Sandesh (magazine). From 2003 till date he has been the editor of the magazine.

Kishore Kumar (4 August 1929 – 13 October 1987), born Abhas Kumar Kanjilal Ganguly was an Indian film playback singer and an actor who also worked as lyricist, composer, producer, director, screenwriter and scriptwriter. Kishore Kumar sang in many Indian languages including Bengali, Hindi, Marathi, Assamese, Gujarati, Kannada, Bhojpuri, Malayalam and Oriya. He won 8 Filmfare Awards for Best Male Playback Singer and holds the record for most number of Filmfare Awards won in that category. He was awarded the "Lata Mangeshkar Award" by the Madhya Pradesh government and from that year onwards, the Madhya Pradesh Government initiated a new award called the "Kishore Kumar Award" for contributions to Hindi cinema.

Kishore Kumar was born into the Ganguly family in Khandwa, Central Provinces and Berar (now in Madhya Pradesh) as Abhas Kumar Ganguly. His father Kunjalal Ganguly (Gangopadhya) was a lawyer. His mother Gouri Devi came from a wealthy Bengali family. Kishore was the youngest of four siblings, the other three being Ashok Kumar (the eldest), Sati Devi, and Anoop Kumar. The composer Bappi Lahiri is also related to Kishore Kumar on his mother's side.