# Basics for Bohr's Model

**URL:** https://metastudio.org/t/basics-for-bohrs-model/15620
**Category:** STEM Chat
**Created:** [May 11, 2025, 8:24am UTC](https://metastudio.org/t/basics-for-bohrs-model/15620 "2025-05-11T08:24:44Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![NAVTEJ7939](https://metastudio.org/user_avatar/metastudio.org/navtej7939/32/9091_2.png) [@NAVTEJ7939](https://metastudio.org/u/NAVTEJ7939)
#### Post date: [May 11, 2025, 8:24am UTC](https://metastudio.org/t/basics-for-bohrs-model/15620/1 "2025-05-11T08:24:44Z")

</div>

This is the basic knowledge you need to understand Bohr’s Model of Atom.

## 🌌 1. **Atomic Structure & Motion**

### ❓ Why don’t electrons lose energy while orbiting the nucleus?

- You questioned how moving particles don’t lose energy like moving objects do.
- ✔ Answer: In Bohr’s model, electrons move in fixed orbits (energy levels) without radiating energy due to quantum rules. Energy is only lost or gained when they jump between levels.

### ❓ Doesn’t movement require continuous energy?

- ✔ In classical physics, yes — but in atomic systems, stable orbits exist due to quantization.
- Newton’s laws apply differently at quantum scales.

* * *

## 🌍 2. **Planetary Motion & Forces**

### ❓ Why don’t planets fall into the sun?

- ✔ They are already moving tangentially with inertia; gravity pulls them inward, balancing the motion into orbits.
- Elliptical orbits form due to conservation of angular momentum and the nature of gravitational interaction.

* * *

## 🌌 3. **Basics of Electromagnetic Waves**

### ❓ What are electric and magnetic fields?

- Electric field: region where a charge feels force.
- Magnetic field: region where a moving charge or magnet feels force.

### ❓ Are E and B fields attracting each other?

- ❌ No attraction — they generate each other when changing, but stay perpendicular.

* * *

## 🌊 4. **Understanding Waves**

### ❓ What is a wave?

- Disturbance that carries energy, not matter.
- You were confused whether particles actually “move in the wave shape”.
- ✔ Answer: In most waves, **particles vibrate at their place** , and the disturbance travels.

### ❓ What is vibration?

- To-and-fro motion about a mean position.
- ✔ Examples: A clock pendulum, air molecules.

* * *

## 💡 5. **Restoring Force & Oscillations**

### ❓ Why do particles vibrate?

- ✔ Due to **restoring force** — a force that tries to bring the particle back to equilibrium.
- Think of springs or molecules in air.

* * *

## 🌈 6. **Electromagnetic Waves Continued**

### ❓ How is EM wave created?

- ✔ A **changing electric field** creates a **magnetic field** , and vice versa.
- Together they form self-sustaining waves.

### ❓ What’s their shape & movement?

- ✔ Electric field (E): oscillates in one plane (say y-axis),
- ✔ Magnetic field (B): oscillates in perpendicular plane (say z-axis),
- ✔ Wave propagates in a third, perpendicular direction (say x-axis).
- All 3 directions are **mutually perpendicular**.

* * *

## 🌀 7. **Common Confusions**

### ❓ Does EM wave involve particles vibrating?

- ❌ No, it’s not particles, it’s **fields** changing in magnitude and direction.
- ✔ But understanding mechanical vibrations helps grasp wave concepts.  
Thanks!