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phys: misc fixes and improvements #9

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@ -22,10 +22,6 @@ Every other SI unit is derived from the fundamental SI units. Memorise these!
Note that on an assesment, you are expected to derive the SI unit expression given the equation of unit. Note that on an assesment, you are expected to derive the SI unit expression given the equation of unit.
For example Force = mass x acceleration = mass x distance / time / time = $kg \times m \times s^{-2}$. For example Force = mass x acceleration = mass x distance / time / time = $kg \times m \times s^{-2}$.
!!! note "Definition"
Physical Quantity: must always be expressed as the product of **magnitude**(number) and a **unit**.
Example: $10m$ (10 meters).
### Metric prefixes ### Metric prefixes
eggy commented 2020-09-24 20:03:03 -04:00
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This isn’t a definition, and I think it can instead be either a warning or rewritten to be integrated into the page somewhere.

To conform with the rest of the repository, unless they are proper nouns, definitions should be in sentence case and should be bolded:

**Physical quantity**: A measurable property of an object or system, expressed as a product of a magnitude (number) and a unit, in that order.

This isn't a definition, and I think it can instead be either a warning or rewritten to be integrated into the page somewhere. To conform with the rest of the repository, unless they are proper nouns, definitions should be in sentence case and should be bolded: `**Physical quantity**: A measurable property of an object or system, expressed as a product of a magnitude (number) and a unit, in that order.`
Every SI unit can be expanded with metric prefixes. Every SI unit can be expanded with metric prefixes.
@ -155,7 +151,7 @@ Error bars represent the uncertainty of the data, typically representing that da
The uncertainty of the **slope** of the line of best fit is the difference between the maximum and minimum slopes. The uncertainty of the **slope** of the line of best fit is the difference between the maximum and minimum slopes.
$$m_{\text{best fit}} ± \frac{m_{\max}-m_{\min}}{2}$$ $$m_{\text{best fit}} ± \frac{m_{\max}-m_{\min}}{2}$$
The uncertainty of the **intercepts** is the difference between the intercepts of the maximum and minimum lines. The uncertainty of the **intercepts** is the difference between the intercepts of the maximum and minimum lines.
$$\text{intercept}_{\text{best fit}} ± \frac{\text{intercept}_{\max} - intercept_{\min}}{2}$$ $$\text{intercept}_{\text{best fit}} ± \frac{\text{intercept}_{\max} - \text{intercept} _{\min}}{2}$$
## 1.3 - Vectors and scalars ## 1.3 - Vectors and scalars