Titlebook: Macmillan Dictionary of Astronomy; Valerie Illingworth Book 1979Latest edition Laurence Urdang Associates Ltd 1979 astronomy.physics

Instinctive

J,ue of *mag- nitude at the effective wavelength, λeff, appropriate to a particular optical or infrared filter (see table). For example, an R magnitude of 3.2 corresponds to a flux density at 0.7 μ of.i.e. 145 Jy. (The table gives the flux level for 0.0 magnitude.)

種屬關系

M,line. According to Mach, inertia can be considered to arise from some (unspecified) interaction between the body and the background presence of distant stars and galaxies; a body in total isolation would not therefore possess inertia.

小溪

lambaste

Occupation

Macmillan Dictionary of Astronomy978-1-349-17803-2Series ISSN 2947-3047 Series E-ISSN 2947-3055

harbinger

2947-3047 Overview: 978-1-349-17803-2Series ISSN 2947-3047 Series E-ISSN 2947-3055

Aesthete

A,. . Anglo-Australian telescope.

micturition

B,. . Crab pulsar. . Crab nebula.

persistence

C,. A small inconspicuous constellation in the southern hemisphere near Orion, the brightest stars being of 4th magnitude. Ab- brev.: Cae; genitive form: Caeli; approx. position: RA 4.5h, dec -40°; area: 125 sq deg.

Hemoptysis