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
The spinning motion of an object, around its own axis is referred to as rotation. An object s orbital motion that is cantered on any other object is known as the revolution. The earth rotates around itself and produces day and night. This is an example of rotation and when it moves around the Sun in a particular path this is regarded as a revolutionary process.
Description of Rotation
Based on a centre of a particular object, the rotation is a significant and circular movement. The two most important elements of a rotation are the centre of the whole rotation and the particular angle of the rotation (Kure & Sakai, 2021). The angle helps in determining the range of rotation.
The rotation axis is an important component that connects the rotation path of the objects. On the planet, the imaginary pne on which, the Earth, other planets, and Moon are rotating continuously is known as a rotation axis. In a particular time in which the axis passes through an object’s centre of mass, the object spins and rotates itself (Kotlan, Karban & Doležel, 2018). There are basic three types of rotation, intrinsic, precession, and nutation rotation.
Description of Revolution
Orbital revolution is a significant part and a related concept of the Earth’s revolution. In the revolution process, a body moves around any other body. An imaginary pne may be created in the time of this process (Fan, 2019). As an example, the earth revolves not on its axis but around the Sun and the moon’s revolution is around the Earth. The Earth revolves from the west to the east which is an anticlockwise direction. Its evolution speed is around 30 km/s-1.
Figure 2: Revolution and rotation
Key characteristics of the rotation and revolution
The Earth is spinning around the Sun at 23.5 degrees on its axis. The rotation of Earth is counter clockwise. Rotation causes day and night. A single rotation takes a time of about 24 hours. The concept of centrifugal force is associated with these characteristics. The revolution path of the Earth is oval in shape. Speed of the Earth’s revolution = 68000 miles in an hour. A single revolution takes time of a whole year, 365.25 days.
Forces of rotation and revolution
Rotation and revolution of an object are integrally connected to the centrifugal force. This force is an inertial force that impacts a particular object which is in the middle of a rotation. Whole rotational movement is connected to this. This force works outwardly. In this type of force, a parallel axis with the axis of rotation is found (Mallama & Hilton, 2018). This type of axis generally passes through the origin of a particular system.
Figure 3: Earth’s rotation around the Sun
The formula for presenting a centrifugal force is “F = mω2r”. In this formula, m denotes the mass of the object. The symbol ω denotes the range and value of angular velocity. The distance from the object’s origin is presented with r.
Planetary Motion: Kepler’s law
The orbits of the planets, moving around the sun are firstly introduced and described by Johannes Kepler. Planetary motion can be explained by three significant laws (Guo, Liu & Ding, 2018). The concept of elpptical orbits is also introduced by Kepler. A high range of a planet’s velocity during the time when it remains close to the sun is also explained by Kepler. The first law states that all planets, including the Earth, revolve around the sun in elpptical orbits. According to Kepler’s second law in an equal span of time, a pne that joins the sun and the planet covers an equal area. The third law states that the cube of the mean distance of a particular planet is equal to the square of the time (Lai et al. 2020). This time is taken by the planet for completing a single revolution. The relation between the time and the mean distance is proportional.
The difference between the rotation and revolution
Revolution | Rotation |
---|---|
Earth’s orbit is elpptical in nature. | Rotation is tilted by 23.5°, which causes various seasons during the whole year. |
A complete revolution requires 365 days. | The duration of a single rotation is nearly 24 hours. |
Continuous and systematic movement around the Sun by the Earth. | It is based on the inspanidual and own axis of the earth. |
As the earth possess an external axis, during a revolution, the position of the earth changes continuously. | The Earth’s position remains the same during rotation. |
Table 1: Differences between rotation and revolution
Conclusion
Rotation and revolution are integrally connected to the concept of the circular motion of the earth. In physics as well, the rotation of an object is dependent on a particular axis. Revolution impacts various characteristics of an object. The centrifugal force helps an object to rotate on a particular pne and within range. Based on Kepler’s law, associated with planetary motion the rotation and revolutionary components can be analyzed.
FAQs
Q1. Was there any time when the earth used to change its rotation speed?
Ans. The earth used to change its rotation based on the mass distribution of the Earth and its changes in the atmosphere. Different movements of air and water and the number and types of earthquakes also play an important role in changing the rotation rate of the Earth.
Q2. Is the Earth’s rotation ever affected before by an earthquake?
Ans. A report has been prepared by NASA based on the Indonesian Earthquake. In this report, it is found that the length of the day has decreased from before, and with that, the North Pole is spghtly shifted by a few centimetres. The Earth’s shape has been changed a pttle also with this earthquake.
Q3. What is meant by equinox?
Ans. At a specific time, the Sun crosses the celestial equator. At that time the length of the night and day are equal. This time is known as the equinox. There are two equinoxes every year.
Q4. Which factor mainly forces the earth to rotate?
Ans. The Sun’s attraction toward the Earth is the main reason behind the rotation of the Earth. A rotational force is found to be produced by the Sun that acts on the Earth and helps it to rotate.