与 «PRINCIPAL FOCUS»相关的英语书籍
在以下的参考文献中发现
principal focus的用法。与
principal focus相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
Any group of parallel rays are converged to a focus by a converging lens, but
there is a special focus known as the principal focus of a lens. The ray diagrams
of fig. 3.5 explain the exact meaning of the principal focus and focal length of a
lens.
2
Cambridge IGCSE® Physics Coursebook with CD-ROM
b parallel rays focus parallel rays focus a Figure 13.16 The effect of a converging
lens on rays of light. a A converging lens makes parallel rays converge at the
principal focus. b Rays from the principal focus of a converging lens are turned
into ...
The principal focus (F) is a point on the principal axis where light comes to a
focus (for a converging lens) or appears to be diverging from (for a diverging lens
). Two foci exist, equidistant on either side of the iens, since light behaves the
same ...
4
Physics for AQA.: Separate award
We saw on pages 1 84 and 1 85 how the fact that a converging lens forms an
image of a distant object at its principal focus can be used to measure the focal
length of the lens. The ray diagram in Figure 2 shows how this works. The image
is ...
Ann Fullick, Patrick Fullick, 2001
5
System of Natural Philosophy
is concave and the rays are diverging, the radiant may be either in the principal
focus, or more remote than the principal focus, or nearer than the principal focus.
And, when the mirrour is convex and the rays are converging, the imaginary ...
6
Mechanics. Optics.-v. 2. Hydrostatics. Astronomy
Is concave and the rays are diverging, the radiant may be either in the principal
focus, or more remote than the principal focus, or nearer tlian the principal focus.
And, when the mirrour is convex and the rays are converging, the imaginary
focus ...
7
Competition Science Vision
Note : (1) Optical centre divides the thickness of the lens in the ratio of the radii of
curvature of its surface. (2) For thin lens, the optical centre coincides with the
geometric centre of the lens. 5. Principal focus (F1 and F) : The point situated on
the ...
8
The Ophthalmic Review: A Quarterly Journal of Ophthalmic ...
Rays whose lines of direction before the first refraction pass through the first
principal focus, proceed parallel to the axis, after passing through the last surface
. If rays proceed parallel to the axis before the first refraction, their lines of
direction ...
9
Comprehensive Physics XII
When object is at infinity, the image is formed at the principal focus i.e., when u =
-°°,v l l KNOWLEDGE PLUS If Rj and It, are numerically equal (say, equal to R),
then f {R -R) R m Case of a glass lens immersed in a liquid 1 .J 1 1 R., or or f fa • If
...
10
Textbook of Ophthalmology
The principal focus of a concave mirror is that point on the principal axis where
light rays traveling parallel to the principal axis converge after reflection. Its focal
length is the distance between the principal focus and the pole of the mirror and
is ...
H. V. Nema, Nitin Nema, 2011
包含词语«PRINCIPAL FOCUS»的新条目
找出国内和国际出版社所讨论的内容，以及词语
principal focus在以下新条目的上下文中是如何使用的。
SandRidge Energy, Inc. Announces Receipt of Notice from NYSE …
... production company headquartered in Oklahoma City, Oklahoma with its principal focus on developing high-return, growth-oriented projects ... «PR Newswire, 七月 15»
Manpower 'contagion' and flexibilization of labour market
The principal focus of the both meetings was manpower agencies and the labour market. The second meeting was more focused as its ... «The Island.lk, 七月 15»
Leni Gas Cuba – Joins Caribbean Council and Cuba Initiative
The principal focus of the Cuba Initiative is on trade and investment. The present Chairman of the UK-side of the Initiative is the Rt. Hon. «DirectorsTalk Interviews, 七月 15»
Dyax Corp (DYAX) Discloses Form 4 Insider Selling : Exec. Henry E …
The principal focus of Dyax is to identify, develop and commercialize treatments for conditions identified as plasma kallikrein (bradykinin) ... «American Trade Journal, 七月 15»
Company Shares of Frontline Ltd. Rally 23.81%
The Companys principal focus is the transportation of crude oil and its related refined dirty petroleum cargoes for oil companies and oil trading ... «Insider Trading Report, 七月 15»
Insider Buying: Delcath Systems Director Buys $81326.50 in Stock …
The Company's principal focus is on the treatment of primary and metastatic liver cancers. The Company's product Melphalan Hydrochloride for ... «The Legacy, 七月 15»
GIB H1 posts $47m profit
Gulf International Bank (GIB) is a leading bank in the Middle East with its principal focus on the GCC states. The bank is owned by the six GCC ... «Trade Arabia, 七月 15»
Company Shares of Dyax Corp. Drops by -9.13%
The principal focus of Dyax is to identify, develop and commercialize treatments for conditions identified as plasma kallikrein (bradykinin) ... «Insider Trading Report, 七月 15»
Company Shares of ARCA biopharma, Inc. Drops by -15.15%
ARCA biopharma, Inc. (ARCA) is a biopharmaceutical company. The Companys principal focus is developing genetically-targeted therapies for ... «American Trade Journal, 七月 15»
Earnings Surprise in Focus: BioTelemetry, Inc. (NASDAQ:BEAT)
The patient services business segment's principal focus is on the diagnosis and monitoring of cardiac arrhythmias or heart rhythm disorders, ... «Investor Newswire, 七月 15»
