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  2. Dhirendra Verma - Wikipedia

    en.wikipedia.org/wiki/Dhirendra_Verma

    Notable among them in Hindi are Hindi-Rashtra ya Suba Hindustan (1930) [5] Hindi Bhasha ka Itihasa ( History of Hindi language ) (1933). [6] Notable books written by Verma in Brij Bhasha are Brij Chhap- Grammar of Brij Bhasha, Ashtchhap, [7] Sursagar Saar, etc. Also he wrote books on rural Hindi. [citation needed] Verma was the principal editor ...

  3. Time in physics - Wikipedia

    en.wikipedia.org/wiki/Time_in_physics

    t is the time between these same two events, but as measured in the stationary reference frame; v is the speed of the moving reference frame relative to the stationary one; c is the speed of light. Moving objects therefore are said to show a slower passage of time. This is known as time dilation.

  4. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    Meaning SI unit of measure alpha: alpha particle: angular acceleration: radian per second squared (rad/s 2) fine-structure constant: unitless beta: velocity in terms of the speed of light c: unitless beta particle: gamma: Lorentz factor: unitless photon: gamma ray: shear strain: radian

  5. Stimulated emission - Wikipedia

    en.wikipedia.org/wiki/Stimulated_emission

    Stimulated emission was a theoretical discovery by Albert Einstein within the framework of the old quantum theory, wherein the emission is described in terms of photons that are the quanta of the EM field. [5] [6] Stimulated emission can also occur in classical models, without reference to photons or quantum-mechanics.

  6. List of Sahitya Akademi Award winners for Hindi - Wikipedia

    en.wikipedia.org/wiki/List_of_Sahitya_Akademi...

    Sahitya Akademi Award is given each year, since 1955, by Sahitya Akademi (India's National Academy of Letters), to writers and their works, for their outstanding contribution to the upliftment of Indian literature and Hindi literature in particular. No Award was conferred in 1962.

  7. Hindi literature - Wikipedia

    en.wikipedia.org/wiki/Hindi_literature

    Hindi literature (Hindi: हिंदी साहित्य, romanized: hindī sāhitya) includes literature in the various Central Indo-Aryan languages, also known as Hindi, some of which have different writing systems. Earliest forms of Hindi literature are attested in poetry of Apabhraṃśa such as Awadhi and Marwari.

  8. Population inversion - Wikipedia

    en.wikipedia.org/wiki/Population_inversion

    The rate at which stimulated emission occurs is proportional to the number of atoms N 2 in the excited state, and the radiation density of the light. The base probability of a photon causing stimulated emission in a single excited atom was shown by Albert Einstein to be exactly equal to the probability of a photon being absorbed by an atom in ...

  9. Category:Physics literature - Wikipedia

    en.wikipedia.org/wiki/Category:Physics_literature

    Category: Physics literature. ... Download as PDF; Printable version; In other projects ... Physics books (8 C, 66 P) F. Fiction about physics ...