Focus

(noun.) maximum clarity or distinctness of an image rendered by an optical system; 'in focus'; 'out of focus'.

(noun.) maximum clarity or distinctness of an idea; 'the controversy brought clearly into focus an important difference of opinion'.

(noun.) the concentration of attention or energy on something; 'the focus of activity shifted to molecular biology'; 'he had no direction in his life'.

(noun.) a fixed reference point on the concave side of a conic section.

(noun.) a point of convergence of light (or other radiation) or a point from which it diverges.

(noun.) a central point or locus of an infection in an organism; 'the focus of infection'.

(verb.) put (an image) into focus; 'Please focus the image; we cannot enjoy the movie'.

(verb.) become focussed or come into focus; 'The light focused'.

(verb.) cause to converge on or toward a central point; 'Focus the light on this image'.

亨利录入

• His Democratic opponents, especially Woodrow Wilson, are, as I write, in the midst of the Presidential campaign of 1912, trying to focus attention on the tariff. 沃尔特·李普曼. 政治序论.
• When we look at near objects, the muscles act in such a way that the lens bulges out, and becomes thick in the middle and of the right curvature to focus the near object upon the screen. 伯莎M.克拉克. 科学通论.
• The greater the refractive power of the lens, the greater the bending, and the nearer the principal focus to the lens. 伯莎M.克拉克. 科学通论.
• A whole village-full of sensuous emotion, scattered abroad all the year long, surged here in a focus for an hour. 托马斯·哈代. 还乡.
• Their fire had ceased entirely and all their energies seemed focused upon escape. 埃德加·赖斯·巴勒斯. 火星公主.
• His eyes were focused on the wine bowl but he was not seeing it. 欧内斯特·海明威. 丧钟为谁而鸣.
• Rays of light are converged and focused at _F_. 伯莎M.克拉克. 科学通论.
• The heat rays from the element are focused on the dish in which the food is being prepared. 佚名. 神奇的知识之书.
• Focusing and ordering are thus the two aspects of direction, one spatial, the other temporal. 约翰·杜威. 民主与教育.
• A luminous image of any object placed in front of the lens is thrown in an inverted position upon the screen, which is of ground glass, to permit the image to be seen in focusing. Edward W. Byrn. 十九世纪发明进展.
• Nor is there anything disingenuous about this focusing of the attention: a real belief is there. 沃尔特·李普曼. 政治序论.
• Looked at externally it is a curious focusing of attention. 沃尔特·李普曼. 政治序论.
• K is the cathode plate, formed of a concave disk of aluminum, which focuses the rays at a point near the center of the bulb. Edward W. Byrn. 十九世纪发明进展.
• At the present time the conflict of philosophic theories focuses in discussion of the proper place and function of vocational factors in education. 约翰·杜威. 民主与教育.
• In practice, the operation would be somewhat as follows, generally speaking: The lens would first be focussed on the animate scene to be photographed. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• The story of the part the new invention had played quickly spread abroad, and added to the intense public interest now focussed on it. 鲁伯特·萨金特·荷兰. 历史性发明.
• Kitty Hawk, the place the Wrights had chosen because the Weather Bureau had told them the winds were strongest and steadiest there, now became one of the chief foci of the world’s attention. 鲁伯特·萨金特·荷兰. 历史性发明.

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