Atoms
Celestial Bodies
- Space Travel Equipment
- Stars
- Rotation and Revolution
- Relation Between Escape Velocity And Orbital Velocity
- Dwarf Planets
- Difference Between Solar Eclipse And Lunar Eclipse
- Difference Between Equinox And Solstice
- The Escape Velocity Of Earth
- Solar System
- Difference Between Stars And Planets
- Difference Between Asteroid And Meteoroid
- Constellations
Circuits
电路 (diàn lù)
电路 (Diànlù)
电路
通信系统Pdf
二极管
地球科学
电荷
电
- 类型的齿轮
- 电子产品在日常生活中
- 类型的汽车
- 类型的直流电机
- 类型的交流电机
- 晶体管工作
- 转矩电流环
- 电动机
- 电阻温度依赖性
- Rms值交流电
- 电抗和阻抗
- 相量表示法交流
- 平行板电容器
- 焦耳定律
- 电力
- 磁场对载流导线的影响
- 电流密度
- 导体绝缘体
- 导电
- 碳电阻器
- 直流发电机
- 类型的发电机
- 类型的电流
- 直流发电机类型
- Torque On Dipole
- 电流的热效应
- 电动发电机
- 静电
- 电阻率不同的材料
- 电场的物理意义
- 介电常数和磁导率
- 电能和权力
- 电流在导体
- 电动汽车
- 位移电流
- 电阻与电阻率之间的差异
- 电动机和发电机之间的区别
- 接地和接地之间的区别
- 电流线圈
- 水的电导率
- 导电的液体
Electricity
电磁波
电磁
静电学
能量
- 能量
- 能源类型
- 热能
- 太阳能项目
- 太阳能汽车
- Ev和Joule之间的关系
- 动能和完成的功
- 能量转换
- 一维和二维的弹性和非弹性碰撞
- 常规能源和非常规能源
- 太阳能炊具
- 潮汐能
- 能源
- 太阳能和光伏电池
- 动能与动量的关系
- 热量与焦耳的关系
- 能源及其对环境的影响
- 能源考虑
流体
武力
Force
摩擦
万有引力
热
动力学理论
光
- 镜面反射漫反射
- 人眼
- 结构人眼功能
- 阴影的形成
- 反射和折射之间的区别
- 相干源
- 光的透射、吸收和反射
- 透明半透明和不透明
- 阳光白色
- 单狭缝衍射
- 拉曼散射
- 粒子自然光光子
- 真实图像与虚拟图像的区别
- 衍射和干涉的区别
磁性
运动
- 运输历史记录
- 速度-时间图
- 旋转动能
- 刚体和刚体动力学
- 扭矩和速度之间的关系
- 粒子的直线运动
- 周期性运动
- 动量和惯性之间的差异
- 动量守恒
- 运动测量类型
- 扭矩
- 慢速和快速运动
- 滚动
- 刚体平移运动和旋转运动
- 相对速度
- 径向加速度
- 速度和速度之间的区别
- 动力学和运动学的区别
- 连续性方程
- 线性动量守恒
自然资源
核物理学
光学
Optics
- Reflection of Light and Laws of Reflection
- Concave Lens
- Total Internal Reflection
- Thin Lens Formula For Concave And Convex Lenses
- Spherical Mirror Formula
- Resolving Power Of Microscopes And Telescopes
- Refractive Index
- Refraction Of Light
- Refraction Light Glass Prism
- Reflection On A Plane Mirror
- Reflection Lateral Inversion
- Rainbow
- Photometry
- Difference Between Simple And Compound Microscope
- Difference Between Light Microscope And Electron Microscope
- Concave Convex Mirror
- Toric Lens
- The Lens Makers Formula
- Simple Microscope
Oscillation
Pressure
- Thrust Pressure
- Relation Between Bar And Pascal
- Regelation
- Sphygmomanometer
- Relation Between Bar And Atm
- Difference Between Stress And Pressure
Quantum physics
- Quantum physics
- Rydberg Constant
- Electron Spin
- Casimir Effect
- Relativity
- Quantum Mechanics
- Electrons And Photons
Radioactivity
- Relation Between Beta And Gamma Function
- Radioactivity Beta Decay
- Radioactive Decay
- Stefan Boltzmann Constant
- Radioactivity Gamma Decay
- Radioactivity Alpha Decay
- Radiation Detector
Scalars and Vectors
- Scalars and Vectors
- Triangle Law Of Vector Addition
- Scalar Product
- Scalar And Vector Products
- Difference Between Scalar And Vector
Scientific Method
- Scientific Methods
- Safety Measures Technology
- Difference Between Science And Technology
- Scientific Investigation
Semiconductors
- Semiconductor Devices
- Junction Transistor
- Semiconductor Diode
- Difference Between Npn And Pnp Transistor
Solid Deformation
- Solid State Physics
- Solid Deformation
- Stress
- Shear Modulus Elastic Moduli
- Relation Between Elastic Constants
- Elastic Behavior Of Solids
- Tensile Stress
- Stress And Strain
- Shearing Stress
- Elastomers
- Elastic Behaviour Of Materials
- Bulk Modulus Of Elasticity Definition Formula
Sound
- Sound waves
- Timbre
- Speed Of Sound Propagation
- Sound Waves Need Medium Propagation
- Sound Reflection
- Sound Produced Humans
- Doppler Shift
- Difference Between Sound Noise Music
- The Human Voice How Do Humans Create Sound With Their Vocal Cord
- Sound Vibration Propagation Of Sound
- Sound Produced Vibration Object
- Reverberation
- Doppler Effect
System of Particles and Rotational Dynamics
Thermal Properties of Matter
- Thermal Properties of Materials
- Thermal Stress
- Thermal Expansion Of Solids
- Thermal Conductivity Of Metals
Thermodynamics
- Statistical Physics
- SI Units List
- Statistical Mechanics
- Reversible Irreversible Processes
- Carnots Theorem
- Temperature
- Kelvin Planck Statement
- Difference between Isothermal and Adiabatic Processes
Units and measurements
- Density of Air
- The Idea Of Time
- Difference Between Pound And Kilogram
- Difference Between Mass And Volume
- Dimensional Analysis
- Density Of Water
- Time Measurement
- Standard Measurement Units
- Relation Between Kg And Newton
- Relation Between Density And Temperature
- Difference Between Mass And Weight
Waves
- Space Wave Propagation
- Sharpness Of Resonance
- Relation Between Group Velocity And Phase Velocity
- Relation Between Amplitude And Frequency
- Periodic Function
- P Wave
- Destructive Interference
- Transverse Waves
- Travelling Wave
- Standing Wave Normal Mode
- S Waves
- Relation Between Frequency And Velocity
- Reflection Of Waves
- Phase Angle
- Period Angular Frequency
Work, Energy and Power
- Derivation Of Work Energy Theorem
- Conservation Of Mechanical Energy
- Relation Between Work And Energy
- Destruction Caused Cyclones
Physics Experiments
- Determine Resistance Plotting Graph Potential Difference versus Current
- To find the weight of a given Body using Parallelogram Law of Vectors
- To study the variation in volume with pressure for a sample of air at constant temperature by plotting graphs between p and v
- To measure the thickness of sheet using Screw Gauge
- To find the value of V for different U values of Concave Mirror find Focal Length
- To find the Surface Tension of Water by Capillary Rise Method
- To find the Resistance of given wire using Metre Bridge and hence determine the Resistivity of its Material Experiment
- Determine Mass of Two Different Objects Using Beam Balance
- Tracing the path of the rays of light through a glass Prism
- Tracing path of a ray of light passing through a glass slab
- Tornado Bottle
- To find image distance for varying object distances of a convex lens with ray diagrams
- To find force constant of helical spring by plotting a graph between load and extension
- To find focal length of concave lens using convex lens
- To find effective length of seconds pendulum using graph
- To find downward force along inclined plane on a roller due to gravitational pull of the earth and its relationship with the angle of inclination
- To draw the IV characteristic curve for p n junction in forward and reverse bias
- To determine Young’s modulus of elasticity of the material of a given wire
- To determine the internal resistance of a given primary cell using a potentiometer experiment
- To determine the coefficient of viscosity of given viscous liquid by measuring terminal velocity of given spherical body
- To determine specific heat capacity of given solid by method of mixtures
- To determine radius of curvature of a given spherical surface by a Spherometer
- Scope and Excitement of Physics
- Rocket science
- Relationship between frequency and length of wire under constant tension using Sonometer
- To determine equivalent resistance of resistors when connected in series and in parallel
- To convert the given galvanometer of known resistance and figure of merit into a voltmeter of desired range and to verify the same experiment
- To determine minimum deviation for given prism by plotting graph between angle of incidence and angle of deviation
- To compare the emf of two given primary cells using potentiometer experiment
Introduction
根据物理学定律,为了产生图像,光线需要来自物体,经过反射和折射后在特定的点相遇。在光线相遇的地方,就形成了图像。在简单字典中,任何发出光线的东西都可以被视为图像。基于这个概念,本教程将包括真实图像和虚拟图像之间的差异。
Definition of the Real image
Figure 1: Real image produced by a concave mirror
为了在屏幕上获得真实的图像,需要将光线组合在屏幕的固定点上。为了在屏幕上获得特定的点,屏幕和光源需要放置在类似的平面上。这种类型的图像可以通过使用会聚透镜或凹面镜来产生(Physics,2022)。
在这种情况下,图像的大小由对象的放置来确定。在光线发生相互作用的地方,就形成了真实的图像。这种图像的性质是颠倒的,可以在屏幕上看到。
Definition of Virtual Image
Figure 2: Virtual image
不可能在屏幕上获得的图像类型被称为虚拟图像。这种图像被认为是可以通过光线的发散形成的直立图像。通过使用凸面镜或发散透镜可以形成这样的图像(Teachoo,2022)。
据推测,光线在被物体形成后反射,在反射镜的外侧发散。在这种图像形成的情况下,光线永远不会聚焦在屏幕上的特定点上。这是无法在屏幕上看到虚拟图像的核心原因
Difference between the real and virtual image
虚拟图像与真实图像在以下方面有所不同——
为了产生真实的图像,光线需要会聚。相反,为了产生虚像,需要感知光线以会聚。真实图像通常是在光线从镜子反射后以组合的方式落在屏幕上的特定点时形成的(Silva-Lora&;Torres,2020)。
另一方面,当光线再次出现并在某个特定点相遇时,就会形成虚像。真实图像被称为反转,而虚拟图像被确定为竖立(Eticaycine,2022)。会聚透镜形成实像,发散透镜产生虚像。因此,可以在屏幕上获得真实图像,但不能在屏幕上获取虚拟图像
Example of the real image
用于真实图像的示例的最常见的例子是在电影屏幕上制作的图像的反射。在电影屏幕上,图像是在使用两个镜头的投影仪的帮助下投影的。图像的创建发生在相机后部的探测器上
Example of the virtual image
虚像最好的例子是在镜子的另一侧反射物体。为了产生虚像,光线需要在某一点相互拦截。人眼已经看到,在光线反射后,在镜子的背面发现了光线的存在(Keydifferences,2022)。在这种情况下,对象和图像的大小彼此无关。
Conclusion
本教程将真实图像定义为通常由光的会聚产生的图像。另一方面,教程中已经定义,为了获得虚拟的图像,光线需要发散。本教程进一步包括了讨论,指出了由镜子形成的这两种类型的图像(虚拟图像和真实图像)之间的差异。在这两种不同类型的图像之间发现的核心区别是,真实图像是倒置的,而虚像是直立的
FAQs
Q1.电影放映机产生的图像是真实的。为什么图像不被视为反转图像
已经观察到,为了产生真实的图像,电影投影仪通常使用两个镜子。第一个用于集中光源。第二个镜子的应用是将图像投影到屏幕上。通过这种方式,图像被反转两次,从而最终的图像被竖立起来。
Q2.凹透镜形成什么样的图像
大多数时候,由于光源通过这种类型的透镜发散,由凹透镜形成的图像是一个缩小的、直立的虚像。
Q3.凸透镜产生什么类型的图像
凸透镜具有产生虚拟图像和真实图像的能力。凸透镜产生的图像类型通常取决于物体的位置。
Q4.为什么在屏幕上看不到虚拟图像
无法投影虚拟图像的主要原因是,为了在屏幕上看到图像,光线需要聚焦在屏幕的特定焦点上。这个特定的焦点不能在屏幕上找到,因为光线不能投射在特定的焦点上。