Definition
A specialized diffraction grating with widely spaced, deep grooves that operates at high diffraction orders to achieve very high spectral resolution. The coarse groove spacing allows multiple spectral orders to be recorded simultaneously, providing detailed analysis of spectral lines across a broad wavelength range.
Etymology
From French 'échelle' meaning ladder or scale, referring to the ladder-like appearance of the multiple spectral orders when dispersed. Developed in the 1940s by French physicist Pierre Jacquinot, the term reflects how the overlapping spectral orders create a step-like pattern resembling rungs on a ladder.
Kelly Says
Echelle gratings are like having multiple prisms stacked together - they create dozens of overlapping rainbow spectra that must be untangled by clever optical design to achieve incredibly detailed spectral resolution! This allows astronomers to measure stellar velocities with precision of just a few meters per second, sensitive enough to detect the gravitational wobble caused by Earth-sized planets orbiting other stars.
Translations
AMአማርኛ
ኢቸል ግራቲንግ
ʔitʃɛl grɛtɪŋ
ARالعربية
شبكة إشيل
ʃabaka ʔiʃiːl
BNবাংলা
ইচেল গ্রেটিং
icēl grēṭiṅ
CACatalà
reta d'echelle
rɛtɐ dɛʃɛl
CSČeština
echelle mříž
ɛʃɛl mɾɪʒ
DADansk
echelle-gitter
ɛɡɛlɡɪtɐ
DEDeutsch
Echelle-Gitter
ɛʃɛlɡɪtɐ
ELΕλληνικά
δίχτυ echelle
ðíxtʰi eʃɛl
ESEspañol
reja de echelle
rexa de eʃɛl
FAفارسی
توری اِشِل
turi eʃil
FISuomi
echelle-ritila
ɛʃɛlriːtila
FRFrançais
réseau d'échelle
ʁezo dɛʃɛl
GUGU
ઇચેલ ગ્રેટિંગ
icēl grēṭiṅ
HAHA
gatarin echelle
ɡatarin ɛʃɛl
HEעברית
רשת אשל
rɛʃet ʔaʃɛl
HIहिन्दी
इचेल ग्रेटिंग
icēl grēṭiṅ
HUMagyar
echelle rács
ɛʃɛlɾɑtʃ
IDBahasa Indonesia
kisi echelle
kisi ɛʃɛl
IGIG
ịkpụ echelle
ɪkpʊ ɛʃɛl
ITItaliano
retticolo di echelle
rɛtˈtʃɔːlo di eˈkɛlle
JA日本語
エシェル格レーティング
esheru gurētingu
KKKK
эшелл кәсі
ɛʃɛl kæsi
KMKM
បន្ទះអេសេល
bɑntɑh ʔaɛsɛl
MRMR
इचेल ग्रेटिंग
icēl grēṭiṅ
MSBahasa Melayu
kisi echelle
kisi ɛʃɛl
MYမြန်မာ
အိချဲလ် ဂရေတင်
ʔaɪtʃɛl grɛtɪŋ
NLNederlands
echelle-rooster
ɛʃɛlɾoːstər
NONorsk
echelle-gitter
ɛʃɛlɡɪtər
PAPA
ਇਚੇਲ ਗ੍ਰੇਟਿੰਗ
icēl grēṭiṅ
PLPolski
siatka echelle
ɕatka ɛʂɛl
PTPortuguês
reta de echelle
ʁɛtɐ dɨ ɛʃɛli
RORomână
rețea de echelle
rɛtse̯a de eʃɛl
RUРусский
решётка Эшеля
rʲɪˈʂotkə ɛʂɛlʲa
SVSvenska
echelle-gitter
ɛʃɛlɡɪtər
SWKiswahili
nyunyu za echelle
ɲuɲu za ɛʃɛl
TAதமிழ்
இச்செல் கிரேட்டிங்
iccel kirēṭṭiṅ
TEతెలుగు
ఇచెల్ గ్రేటింగ్
icēl grēṭiṅ
THไทย
ตาข่าย echelle
tākʰāi ʔeːkʰɛl
TLTL
pamaypay na echelle
pamajpaj na ɛʃɛl
TRTürkçe
echelle ızgara
eʃɛlɪ ɯzɡara
UKУкраїнська
решітка Ешеля
rɛʃɪtka ɛʃɛlʲa
URاردو
ایچل گریٹنگ
ʔaɪtʃal grēṭiṅ
VITiếng Việt
lưới echelle
lwɔɪ ɛʃɛl
YOYO
àṣẹ echelle
aʃɛ ɛʃɛl
ZH中文
埃歇尔光栅
āi xiē ěr guāng shān
ZUZU
ukhuni echelle
ukʼhuni ɛʃɛl