interferometer method
111Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …
112Fourier transform spectroscopy — is a measurement technique whereby spectra are collected based on measurements of the temporal coherence of a radiative source, using time domain measurements of the electromagnetic radiation or other type of radiation.It can be applied to a… …
113Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure — Timeline of galaxies, clusters of galaxies, and large scale structure of the cosmosPre 20th Century* 400s BC Democritus proposes that the bright band in the night sky known as the Milky Way might consist of stars, * 300s BC Aristotle believes the …
114Radio astronomy — is a subfield of astronomy that studies celestial objects at radio frequencies. The field originated from the discovery that many astronomical objects emit radiation in the radio wavelengths as well as optical ones. The great advances in radio… …
115Orion Nebula — The entire Orion Nebula in visible light. Credit: NASA/ESA Observation data: J2000 epoch …
116Hippolyte Fizeau — Infobox Scientist name = PAGENAME box width = image width =150px caption = PAGENAME birth date = September 23, 1819 birth place = Paris death date = September 18, 1896 (aged 74) death place = Venteuil residence = citizenship = nationality =… …
117Active optics — is a relatively new technology for reflecting telescopes developed in the 1980s, which has more recently enabled the construction of a generation of telescopes with 8 metre primary mirrors. Active optics works by actively adjusting the telescope… …
118IRIS — can refer to: In technology * IRIS T, a German air to air missile * International Reactor Innovative and Secure, an advanced light water nuclear reactor design * Internal Rotary Inspection System, an ultrasonic method for the nondestructive… …
119FP — The abbreviation FP may refer to:*First person, grammatical person which refers to the speaker *Family practice (family physician, family practitioner) general practice *French Polynesia (FIPS 10 4 country codes) * Falcon Patrol Commodore 64… …
120Lisa — Infobox Given name 2 gender = feminineLisa is a name derived from Elizabeth. It was/is most popular in the English speaking world among females born in the 1960s and has slowly declined in popularity since.Lisa may refer to: ;Acronyms: * LISA… …
