J/ψ particle

Jaakkola, Toivo

Jabiru mycteria

Jackknife Method

Jackson's inequality

Jackson, John David

Jaco-Shalen-Johannson Torus Decomposition

Jacobi, Karl Gustav Jacob

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Jacobi–Anger expansion

Jacobi–Madden equation

Jacobi coordinates

Jacobi elliptic functions

Jacobi identity

Jacobi method

Jacobi polynomials

Jacobi symbol

Jacobi theta functions

Jacobi triple product

Jacobi zeta function

Jacobian curve

Jacobian matrix and determinant

Jacobi's formula

Jacobsenia

Jacobsite

Jacobson–Bourbaki theorem

Jacobson radical

Jacobsthal number

Jacquemontia reclinata
Jacquemontia solanifolia

JADE (particle detector)

Jadunia

Jaera

Jaffueliobryum

Jainosaurus

* Jakobson Theorem

Jacquard, Joseph Marie

Jaegerina

Jaegerinopsis

Jalmenus

Jalmenus aridus
Jalmenus clementi
Jalmenus daemeli
Jalmenus eichhorni
Jalmenus evagoras
Jalmenus. icilius
Jalmenus inous
Jalmenus pseudictinus

James Clerk Maxwell Telescope

Jamides

Jamin, Jules Célestin

Jamin interferometer

Janaira

Janinae

Janira

Janiralata

Janirellidae

Janiridae

Janiszewski Zygmunt

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Janjucetidae

Janjucetus

Janko Zvonimir

Janko Groups

Jansky, Karl Guthe

Janssen, Pierre Jules Cesar

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Janthecla

Janthura

Janus laser

Japan Society of Applied Physics

Japanagromyz

Japanese Journal of Applied Physics

Japanese theorem for cyclic polygons

Jarnsaxa

Jarosite

Jasper

Jaunsen, A.