PPT-Phys 102 – Lecture 20 The eye & corrective lenses

1 Today we will Apply concepts from ray optics amp lenses Simple optical instruments the camera amp the eye Learn about the human eye Accommodation Myopia hyperopia and corrective lenses. gpliinfo brPage 3br Vertex Conversion Chart minus plus 387 400 425 400 425 450 425 450 475 450 475 500 475 500 525 500 525 562 512 550 587 537 575 612 562 600 650 575 625 675 600 650 700 625 675 737 650 700 762 662 725 800 687 750 825 712 775 850 725 Sensors. (bit incomplete. , still). Sensing Categories. Voltage. starting easy: analog in. Distance. acoustic or light. Speed. hard; usu. via distance. Acceleration. accelerometers. Light Level. phototransistors, photodiodes. Assembly Language and . Arduino. Behind the C code (or sketch). C provides a somewhat human-readable interface. but it gets . compiled. into machine instruction set. ultimately just binary (or hex) instructions loaded into the . Lenses and Optical Instruments . Key Points. Thin Lenses; Ray Tracing. Combinations of Lenses. The Human Eye; Corrective Lenses. Compound Microscope. References. 23. -7,8,9; 25-2,3,4,5. . Thin lenses are those whose thickness is small compared to their radius of curvature. They may be either converging (a) or diverging (b).. Sensors. (. always incomplete. ). adapted from T. Murphy’s lectures. Sensing Categories. Voltage. starting easy: analog in. Distance. acoustic or light. Speed. hard; usu. via distance. Acceleration. Assembly Language and . Arduino. Adapted from T. Murphy’s slides. Behind the C code (or sketch). C provides a somewhat human-readable interface. but it gets . compiled. into machine instruction set. LCD Text Display. Keypads and Time Slicing. Interrupts. adapted from . T. Murphy’s . lectures. 2×16 LCD . Typically 5×8 dots per character. Note 16 pins: indicator of common interface. Phys 124: Lecture 4. Adapted from T. Murphy’s lectures. The Rubric, Once Again. Sense some real-world quantity. input: analog or digital. sensor or user input (switches, keypad). Process the information. code in software. 1. Physics 102 lectures on light. Lecture 15 – EM waves. Lecture 16 – Polarization. Lecture 22 & 23 – Interference & diffraction. Lecture . 17 . – . Introduction to ray optics. Lecture . global contact lenses market has reached USD 7.59 billion in 2020 and is further projected to reach USD 11.48 billion by 2027, at a CAGR of 5.9% during the forecast period Michael Fowler, . UVa. Today’s Topics. A bit more about mirrors…. Refraction. Lenses. Ray tracing to locate image. Concave Mirror Focusing Sunlight. This solar collector is really many small flat mirrors, but equivalent to a concave mirror focusing parallel rays to a point half way from the center of the mirror to its center of curvature.. 1. Today we will.... Learn how combinations of lenses form images. Thin lens equation & magnification. Learn about the compound microscope. Eyepiece & objective . Total magnification. Learn about limits to resolution. Analog Handling. Once the microcontroller is managed, it’s often the analog end that rears its head. getting adequate current/drive. signal conditioning. noise/glitch avoidance. debounce. is one example. 1. Today we will.... Learn about the . electric potential energy. Relate it to . work. Ex: charge in uniform electric field, point charges. Apply these concepts. Ex: electron microscope, assembly of point charges, dipole .