Worlds of David Darling
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F star
F-1 (rocket engine)
F-14 Tomcat
F-86 Sabre
Faber-Jackson relation
Fabre, Jean Henri (1823–1915)
Fabricius, David (1564–1617) and Johann (1587–1615)
Fabricius ab Aquapendente (1537–1619)
Fabry, Marie Paul Auguste Charles (1867–1945)
Fabry lens
Fabry-Pérot interferometer
face, anatomy
face, mathematics
"face," on Mars
facial artery
facial muscles
facial nerve
facilitated diffusion
factor
factor V
factor VIII
factor IX
factor analysis
factorial
factorion
facula
Fadiman, Clifton (1904–1999)
Faget, Maxime A. (1921–2004)
Fagnano's problem
Fahrenheit, Gabriel Daniel (1686–1736)
fainting
fairing
fairy ring
Falcon 1
Falcon 9
fall line
Fallopian tube
Fallopius, Gabriel (1523–1562)
fall-away section
false alarms, in SETI
false memory syndrome
FAME
family
Fanaroff-Riley classification
Fanconi anemia
farad
Faraday, Michael (1791–1867)
Faraday cage
Faraday rotation
Faraday's laws
Farey sequence
fascia
FAST (Fast Auroral Snapshot Explorer)
fast neutron
fast reactor
faster-than-light (FTL) travel
fastest spacecraft
Fastrac engine
fat (triacylglycerol)
fathom
fatty acids
fauces
fault
fault scarp
fauna
Faye, Herve (1814–1902)
Faye's Comet
feather
feces
Fechner, Gustav Theodor (1801–1887)
Fedorov, E. S. (1853–1919)
feedback
Fehling's solution
Feigenbaum's constant
feldspar
female genital tract
female reproductive system
female sexual response and hormone control
femoral artery
femoral nerve
femur
fen
Feoktistov, Konstantin Petrovich (1926–2009)
Fermat, Pierre de (1601–1665)
Fermat number
Fermat's last theorem
Fermat's little theorem
Fermat's spiral
fermentation
fermi (unit)
Fermi, Enrico (1901–1954)
Fermi acceleration
Fermi level
Fermi Paradox
Fermi-Dirac statistics
fermion
fermium
fern
ferret (military satellite)
ferrite
ferro-alloys
ferrocene
ferromagnetism
fertile material
fertilization
fertilizer
Fessenden, Reginal Aubrey (1866–1932)
fetus
fever
Feynman, Richard Phillips (1918–1988)
Feynman diagram
Feynman sum-over-paths
FG Sagittae
FGK stars
fiber
fiberglass
Fibonacci (c.1175–1250)
Fibonacci sequence
fibril
fibrillation
fibrin
fibrinogen
fibroadenoma
fibroblast
fibroid
fibrosarcoma
fibrous joint
fibrous proteins
fibula
field
field curvature
field galaxy
field lens
field of view
field rotation
field star
field stop
field theory
field-emission microscope
field-ion microscope
Fifteen Puzzle
figurate number
figuring
filament (of a flower)
filament (on the Sun)
filament (wire)
filariasis
file
file transfer protocol (FTP)
filigree
films and plays involving mathematics
filter, electronic
filter, optical
filtergram
filtration
fin
final helium flash object
find
fine structure
fine structure constant
finger
Finger, Harold B. (1924–)
finite
finite-state automaton
fire clay
fire extinguisher
fire point
fireball
firebrick
firedamp
fireworks
firing
firing chamber
first contact
"first law of thermodynamics"
"first light"
first lunar meridian
First Men in the Moon
first motion
firsts in spaceflight
firth
Fischer, Emil Hermann (1852–1919)
Fischer, Ernst Otto (1918–2007)
Fischer, Hans (1881–1945)
Fischer-Tropsch reaction
fish
Fisher, Adrian
fissile material
fission, cellular
fission, nuclear
fissure
fistula
Fitch, John (1743–1798)
Fitch, Val Logsdon (1923–)
Fitchneal
Fitzgerald, George Francis (1851–1901)
five
fixed star
fixed-point attractor
Fizeau, Armand Hippolyte Louis (1819–1896)
fjord
FK Comae Berenices star
flag
flagellate
flagellum
flame bucket
flame deflector
flame test
Flame Nebula (NGC 2024)
Flaming Star Nebula (IC 405)
Flammarion, Camille (1842–1925)
Flamsteed, John (1646–1719)
Flamsteed number
flap
flare
flare star
flash photolysis
flash point
flash spectrum
flashback
flat
flat field
Flatland: A Romance of Many Dimensions
flatworm
flavor
flax
flea
Fleming, Alexander (1881–1955)
Fleming, John (1849–1945)
Fleming, Williamina Paton Stevens (1857–1911)
Fleming's rules
Fletcher, James Chipman (1919–1991)
flexagon
Flexner, Simon (1863–1946)
flexor
FLIERs (fast, low ionization emission regions)
flight
flight, history
flight acceptance test
flight path
flight path angle
flight profile
flight readiness firing
Flight Research Center
flight simulator
flight test
flint
flint glass
flip-flop
flood plain
floor function
flora
Flora family (of asteroids)
Florey, Howard Walter (1898–1968)
flotation process
flowchart
flower
FLTSATCOM (Fleet Satellite Communications)
fluid
fluid dynamics
fluid flow
fluid mechanics
fluidics
fluidization
fluorescein
fluoresence
fluoresence in situ hybridization
fluorine
fluorite
fluorocarbon
fluoroscope
flux
flux collector
flux density
flux tube
fly-away disconnects
fly-between-trains problem
flyby
Flying Bedstead (Rolls-Royce Thrust Measuring Rig)
flying disk
flying saucer
flywheel
f-number
foam
foam rubber
Fobos
FOBS (Fractional Orbital Bombardment System)
focal chord
focal length
focal plane
focal point
focal radius
focal ratio
focal reducer
focus
focus, orbital
foehn
fog
Fokker-Planck equation
fold
foliation
folic acid
folium
follicle
follicle-stimulating hormone
following
Follow-Up Detection Device (FUDD)
Fomalhaut (Alpha Piscis Austrini)
Fontana, Giovanni da (1395–1455)
fontanelle
Fontanelle, Bernard le Bovier de (1657–1757)
"foo fighters"
food poisoning
food storage in plants
foot (anatomy)
foot (unit)
foot-pound
footprint
foramen
foramen magnum
foraminifer
forbidden line
Forbidden Planet
Forbush decrease
force
force charge
forces of flight
Ford, Henry (1863–1947)
forebrain
forest
forging
formal system
formaldehyde
formalism
formation age
formation interval
formic acid
Fornax (constellation)
Fornax A
Fornax Cluster
Fornax Dwarf
forsterite
FORTE (Fast On-orbit Recording of Transient Events)
fortean falls
FORTRAN
Fortune's conjecture
Forward, Robert L(ull) (1932–2002)
forward scattering
forward-contamination
fossil
fossils, martian
Foucault, Jean Bernard Léon (1819–1868)
Foucault knife-edge test
Foucault pendulum
founder effect
foundry
fountain experiment
four
four coins problem
four fours problem
four knights puzzle
four-color problem
Fourier, (Jean Baptiste) Joseph, Baron (1768–1830)
Fourier analysis
Fourier series
fourth dimension
four-stroke engine
fovea
Fowler, William ("Willy") Alfred (1911–1995)
Fox, Sidney W. (1912–1998)
Fp star
FPS system
fractal
FRACTALS AND PATHOLOGICAL CURVES
fraction
fractionation
fractures and dislocations
fragile X syndrome
frame of reference
frame-dragging
FRANCE IN SPACE
francium
Franck, James (1882–1964)
Frank, Ilya Mikhailovich (1908–1990)
Frankland, Edward (1825–1899)
Franklin, Benjamin (1706–1790)
Franklin-Adams charts
Frasch process
Fraser spiral
Fraunhofer, Joseph von (1787–1826)
Fraunhofer lines
freckle
Fred Lawrence Whipple Observatory
Fredholm, Erik Ivar (1866–1927)
free electron
free oxygen
free radical
free will
free-bound transition
freefall
free-free transition
Freemish crate
free-piston engine
freezing point
Frege, Friedrich Ludwig Gottlob (1848–1925)
Freitas, Robert
French Space Agency
Frénicle de Bessy, Bernard (1602–1675)
Freon
frequency
frequency bands
frequency distribution
frequency modulation (FM)
Fresnel, Augustin Jean (1788–1827)
friction
Friedel-Crafts reaction
Friedman, Herbert (1916–2001)
Friedmann, Aleksandr Aleksandrovich (1888–1925)
fringing
Frisch, Karl von (1886–1982)
Frogs and Toads puzzle
frogs in stones
Froissart, Jean (c.1337–1410)
From the Earth to the Moon
front (weather)
frontal bone
frost
frostbite
frozen shoulder
fructose
fruit
frusemide
frustum
Frosch, Robert A. (1928–)
F-type asteroid
FU Orionis star
fuel
fuel cell
fuel element
fuel rod
fugue
Fuji
fulcrum
Fuller, Richard Buckminster (1895–1984)
fullerene
fuller's earth
Full-sky Astrometric Mapping Explorer (FAME)
fulminate
fumaric acid
fumarole
function
functional analysis
functional group
FUNCTIONS
fundamental catalogue
fundamental group
Fundamental Katalog (FK)
fundamental particle
fundamental star
fundamental theorem of algebra
fundamental theorem of arithmetic
fundamental unit
fungal disease
fungi
Funk, Casimir (1884–1967)
funny bone
fur
furfural
furlong
furnace
fuse
FUSE (Far Ultraviolet Spectroscopic Explorer)
fusel oil
fuselage
fusion propulsion, microwave-induced
fusion, nuclear
fusion crust
future lightcone
Fuyo
fuze
fuzzy logic