n. (Opt.) The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed. Syn. -- ocular. [ 1913 Webster ]
Collimating eyepiece. See under Collimate. -- Negative, or Huyghenian, eyepiece, an eyepiece consisting of two plano-convex lenses with their curved surfaces turned toward the object glass, and separated from each other by about half the sum of their focal distances, the image viewed by the eye being formed between the two lenses. it was devised by Huyghens, who applied it to the telescope. Campani applied it to the microscope, whence it is sometimes called Campani's eyepiece. -- Positive eyepiece, an eyepiece consisting of two plano-convex lenses placed with their curved surfaces toward each other, and separated by a distance somewhat less than the focal distance of the one nearest eye, the image of the object viewed being beyond both lenses; -- called also, from the name of the inventor, Ramsden's eyepiece. -- terrestrial, or Erecting eyepiece, an eyepiece used in telescopes for viewing terrestrial objects, consisting of three, or usually four, lenses, so arranged as to present the image of the object viewed in an erect position. [ 1913 Webster ]
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(อาย) n. ตา,นัยน์ตา,จักษุ,สายตา,การดู,การจ้อง,ความตั้งใจ,ความคิด,ข้อคิด,ทัศนะ,ช่อง,รู,ทิศทางลม,ตาของหน่อพืช,จุดของแสง,หลอดไฟที่มีแสง,สิ่งที่มีรูปคล้ายตา. -Phr. (keep an eye on เฝ้าดู,ดูแล,เพ่งเล็ง) -pl. eyes,eyen ###S. observe,wa [Hope]
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย
