Convex lens的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列問答集和資訊懶人包

Optics and Optical Instruments

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為了解決Convex lens的問題，作者Johnson, B. K. 這樣論述：

This book illustrates basic practical applications of optical principle. Working models of telescopes, microscopes, photographic lenses, and optical projection systems are diagrammed and explained in full, as are the basic experiments for determining accuracy, power, angular field of view, amount

of aberration, and all other necessary facts about the instrument. Throughout the book, only elementary mathematics is used, for the benefit of the student and the beginner in the field of optics.The author, an assistant professor at the Imperial College of Science and Technology in London, shows h

ow to set up working models of each of the four types of instruments named above, so that the reader can see for himself the effects of changing the focal length, using different types of lenses, rotating the lens, and other experiments. He also includes a number of experiments to illustrate theoret

ical principles such as the reflection and refraction of light and focal length measurements of concave and convex lenses.A chapter on the human eye follows, and the author explains how to set up a simple working model of the eye in order to illustrate myopia, astigmatism, hypermetropia, and the vis

ual acuity of the eye. Professor Johnson concludes with an important chapter on the working and testing of optical glass, in which he describes the roughing of lenses, the principles of the grinding and polishing processes, abrasives, edging, angle measurement, and other important steps in the produ

ction of optical glass. An appendix is included on the cleaning of glass surfaces, silvering, photographic items, developers, collodion films, and waxes and cements used for various purposes in optical work.This is a valuable work for the student and the amateur hobbyist as well as for many who use

optical instruments in science and industry. It is written clearly and economically, with the needs of the practical worker in the field of optics held constantly in mind.

Convex lens進入發燒排行的影片

以fMRI探討不同推理能力之理科生在光學透鏡成像操弄時之心智旋轉腦神經作用機轉

為了解決Convex lens的問題，作者蔡尚恆 這樣論述：

本研究補充了過去對光學空間關係性推理所顯露的心智旋轉機制文獻極少的問題，亦解決了相關主題的腦波文獻空間解析度相對不足的限制。本研究目的在探討不同關係性推理能力的理科生，於不同關係整合能力需求程度的光學成像推理任務中，其心智旋轉的歷程，大腦活化的腦區與活化程度在fMRI動態變化之探究。本研究包含「fMRI光學成像推理實驗」，受試者會在反射屏幕回答三類光學關係性推理問題(單一凹透鏡、單一平面鏡、單一凸透鏡)；之後會有「瑞文氏測驗」測其「關係性推理能力」。研究對象為20歲到30歲受過理工教育之自願者18名。資料蒐集工具為在Matlab運作下的cogent，它紀錄了行為資料「成像結果作答正確率、作答

反應時間」，cogent也呈現刺激材料和實驗時序排程；fMRI紀錄了「不同腦區的BOLD signal活化強度、活化位置、活化範圍」；瑞文氏測驗紙紀錄「答題正確率」。研究結果顯示三類光學成像推理任務之作答反應時間、正確率有差異，其行為資料結果顯示:推理任務難度凸透鏡>平面鏡>凹透鏡。瑞文氏分數與三類光學成像推理任務之作答反應時間、正確率有相關，其線性迴歸結果顯示:關係性推理能力可預測最困難任務之「凸透鏡成像結果作答正確率」；作答反應時間與正確率呈負相關。此外三類光學成像推理任務在「心智模型操弄推理階段」大致牽涉「BA19、PPC(BA7、39、40)、BA4&6、IFG、DLPFC(BA9、4

6)、BA10&32」等腦區的活化，其fMRI資料的結果顯示，於難度最高的「凸透鏡心智模型操弄推理階段」所活化腦區最廣、活化強度最高，主要涵蓋腦部頂葉連結到BA6與心智旋轉密切關聯之神經網路。更發現「平面鏡心智模型操弄推理階段」比「凸透鏡心智模型操弄推理階段」可能更多著重腹側視覺訊息流（ventral visual stream）處理物體辨識圖像之訊息。此外在「心智模型操弄推理階段」任務難度會影響「BA19、PPC(BA7、39、40)、BA4&6、IFG、DLPFC(BA9、46)、BA10&32」等腦區的活化，其fMRI資料的結果顯示，於「凸透鏡對比於凹透鏡的心智模型操弄推理階段」時，活化

有顯著差異的腦區更涵蓋小腦、基底核與Insula。基底核與心智旋轉之關聯可能在此深層神經結構與前額葉及頂葉有神經網路的連結。Insula可能與心智模型形成時不確定性的抉擇有關，這可說明為何凸透鏡成像結果作答正確率最低。此外瑞文氏分數與三類光學成像推理任務在「心智模型操弄推理階段」所活化腦區有部分相關，其線性相關結果顯示，關係性推理能力與「凸透鏡對比於平面鏡的心智模型操弄推理階段」於ACC、Cingulate Gyrus呈正相關，此部分活化的腦區是靠中後方的ACC，此區域與BA6及prefrontal cortex可能有緊密的神經連結，此結果意涵在任務難度差異大的情境下，關係性推理能力越高則「專

注、偵錯、抑制和工作記憶無關訊息、心智旋轉的能力」可能也越強。本研究依任務難度之不同，心智旋轉成像腦區活化型態亦不同且其誘發之活化反應形式相當恆定。此任務可供往後研究心智旋轉腦部運作機制一個好用的工具。本研究釐清部分心智旋轉之腦部運作機制並發現理科生之關係性推理能力與不同難度任務測試下活化腦區之相關性。相信這些成果可為往後探究此領域之人提供重要參酌。(註: 「推理能力」eductive ability，在本論文意同「關係性推理能力」)