## What is the cause for Precession of Equinoxes?

Subject: Physics | Topics:

Major purpose of this lecture is to present on cause for Precession of Equinoxes. Precession is caused by the torque applied by the Sun, the Moon, and the planets. The torque is the result of the gravitational pull on Earth’s equatorial bulge. The lower left picture explains the effect due to the Sun. The lower right picture shows the 26000 year period precession of the north celestial pole. Earth’s precession was historically called the precession of the equinoxes, because the equinoxes moved westward along the ecliptic relative to the fixed stars, opposite to the yearly motion of the Sun along the ecliptic.

### Assignment on fundamental sciences

Fundamental sciences is the study of material things was treated as a single aspect of human thought and called natural philosophy. But as knowledge increased it was found necessary to divide the study of nature into two main branches. They are  two main fundamental sciences are- A. Physical sci.....

### Assignment on Refraction of Light

Reflection of Light The bouncing off of light or any wave at the face or boundary between two medium is called refraction.The figure above illustrates the regular reflection of a light ray. MM` represents the surface of a plane mirror. AO is the incident ray i.e. the direction in which light fall.....

### Experiment Study of Wein Bridge Oscillator

Prime objective of this case study is to experiment on Wein Bridge Oscillator. The oscillator is a circuit where a balanced bridge is used because feedback network is Wien Bridge oscillator. The aim of this experiment is to check the operation of the Wien Bridge. To explain this experiment here .....

### What is Wave

Wave is a form of disturbance which travels onward due to repeated periodic motion of the medium particles. Energy is transferred during wave motion. Types of wave Mechanical wave: This type of wave motion requires material medium to propagate. For example ripples on water surface, vibration of a.....

### Experiment Study of Class-C Tuned Power Amplifier

Primary objective of this case study is to experiment on Class-C Tuned Power Amplifier. Here focus on an amplifier that has tuned collector load and active device transistor operating at Class- C mode and observe the output voltage and current relationship at different harmonics. To experiment .....