# Mathematical notation

Bear supports LaTeX and MathML.

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LaTeX can be written between $$ and will be rendered in browser as MathML. #### Inline: $$E=mc^2$$ $E=m{c}^{2}$ #### Block: $$
4 \, \text{H} \rightarrow \text{He} + 2 \, \text{e}^+ + 2 \, \nu_e + \gamma
$$ $4,\text{H}\to \text{He}+2,{\text{e}}^{+}+2,{\nu }_{e}+\gamma$ #### Full example: # Introduction to$$E=mc²$$*Note that  and$$ should just render normally.*

Einstein's mass-energy equivalence is one of the most famous equations in physics. It states:

$$E=mc^2$$

where:

- $$E$$ is the energy of an object.
- $$m$$ is the mass of the object.
- $$c$$ is the speed of light in a vacuum (approximately $$3 \times 10^8$$ m/s).

In simple terms, this equation tells us that mass and energy are interchangeable. A small amount of mass can be converted into a large amount of energy, and vice versa.

## Energy conversion in the Sun

For example, in the Sun, nuclear fusion reactions convert hydrogen into helium. In these reactions, a small amount of the mass of the hydrogen is converted into energy, according to the equation $$E=mc^2$$.

$$4 \, \text{H} \rightarrow \text{He} + 2 \, \text{e}^+ + 2 \, \nu_e + \gamma$$

This is why the Sun has been able to produce enormous amounts of energy for billions of years.


# Introduction to $E=m{c}^{2}$

Note that $and$\$ should just render normally.

Einstein's mass-energy equivalence is one of the most famous equations in physics. It states:

$E=m{c}^{2}$

where:

• $E$ is the energy of an object.
• $m$ is the mass of the object.
• $c$ is the speed of light in a vacuum (approximately $3×{10}^{8}$ m/s).

In simple terms, this equation tells us that mass and energy are interchangeable. A small amount of mass can be converted into a large amount of energy, and vice versa.

## Energy conversion in the Sun

For example, in the Sun, nuclear fusion reactions convert hydrogen into helium. In these reactions, a small amount of the mass of the hydrogen is converted into energy, according to the equation $E=m{c}^{2}$.

$4,\text{H}\to \text{He}+2,{\text{e}}^{+}+2,{\nu }_{e}+\gamma$

This is why the Sun has been able to produce enormous amounts of energy for billions of years.