Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
An astronomical telescope of the earliest type, with a biconvex objective and biconcave eyepiece.
- ‘During this activity we will concentrate on Keplerian and Galilean telescopes; telescopes made with two lenses instead of a combination of lenses and mirrors.’
- ‘The reverse Galilean telescopes are tilted relative to each other.’
- ‘I actually have two on that replica Galilean telescope, so I made certain both were covered.’
- ‘The Keplerian telescopic system is heavier than the Galilean telescope because the eyepiece and objective are composed of two plus lenses.’
- ‘A typical Galilean telescope with which Jupiter's moons could be observed was configured as follows.’
- ‘The Galilean telescopes in the IMSS have rather strong ocular lenses, and unfortunately such lenses were not available from the department.’
- ‘Eschenbach Galilean telescopes for distance are available in monocular or binocular systems.’
- ‘Reading systems can be fabricated which combine a Galilean telescope with a plus lens cap to focus at near.’
- ‘The film does rather off-handedly allude to the fact that scientific innovations were important for the art of that time, particularly the camera obscura and the Galilean telescope.’
- ‘The Astronomy Group built Galilean telescopes and used them to study the same heavenly bodies that Galileo did 375 years ago.’
- ‘A 3x afocal Galilean telescope has a separation between the objective and ocular lens of 2cm.’
- ‘Actually, the Galilean telescope was quickly abandoned for other types, in particular the design suggested by Johannes Kepler.’
- ‘A variation on the Galilean telescope was suggested by Johannes Kepler in his 1611 book Dioptrice.’
- ‘While the pupil of the Keplerian telescope can be matched to the observer's eye, the pupil of the Galilean telescope is always mismatched.’
- ‘In 1611 Johannes Kepler invented the ‘astronomical telescope’, which had a much larger field of view than the Galilean telescope and a much brighter, although inverted, image.’
- ‘Equations have been derived for Galilean telescopes and telemicroscopes that make it unnecessary to find pupils and ports, or to know the powers of the lenses.’
- ‘Examples of refracting afocal systems include an ordinary Keplerian telescope, a Galilean telescope, and a lens-erecting telescope.’
- ‘For instance, consider a Galilean telescope with a + 2.00 objective and a - 8.00 ocular.’
- ‘When in alignment, the Galilean telescopes provide an increase or decrease in magnification, depending on orientation of the telescopes.’
- ‘The main obstacles to the acceptance of these devices are cosmetic considerations, the ring scotoma caused by the magnification, and the limited field of the smaller Galilean telescopes.’
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.