Skip to content
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 3 additions & 3 deletions electronics/electricity-basics.md
Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ Let's dive into each of these concepts more deeply, starting with current.
## What is current?

<video autoplay loop muted playsinline aria-label="An animated gif showing current flowing in a simple circuit out of the positive terminal of a 9V battery through an LED and resistor and then back to the negative terminal of the 9V battery">
<source src="assets/gifs/CurrentFlow_EngineeringMindset.mp4" type="video/mp4" />
<source src="assets/videos/CurrentFlow_EngineeringMindset.mp4" type="video/mp4" />
</video>
**Figure.** **[Current](https://en.wikipedia.org/wiki/Electric_current)** is the flow of charged particles—in this case, electrons—through a conductor. In the animation above, we are illustrating "electron flow" as a dotted green line, which flows from the negative terminal of the 9V battery, through an LED and resistor, and then back to the 9V battery to its positive terminal. Note that this is actually opposite from *conventional current* flow, but we'll get to that below. Animation from [The Engineering Mindset](https://youtu.be/kcL2_D33k3o).
{: .fs-1 }
Expand Down Expand Up @@ -115,7 +115,7 @@ Importantly, just like your home plumbing system, where water flows instantly ou
This is similar to current in a circuit—atoms are tightly packed in a material with orbiting electrons. When a voltage is applied, these electrons start to "hop" from one atom to another through a conductor but do not instantly travel from A to B (see [video](https://youtu.be/OGa_b26eK2c?t=472)).

<video autoplay loop muted playsinline aria-label="An animated gif showing electrons hopping from atom to atom propelled by an applied voltage">
<source src="assets/gifs/ElectronsFlowingFromAtomToAtomToMakeCurrent.mp4" type="video/mp4" />
<source src="assets/videos/ElectronsFlowingFromAtomToAtomToMakeCurrent.mp4" type="video/mp4" />
</video>
{: .mx-auto .align-center }

Expand Down Expand Up @@ -400,7 +400,7 @@ Could have posille's law here? -->
### What are resistors?

<video autoplay loop muted playsinline aria-label="An animated gif showing how resistors can be placed in a circuit to resist current flow.">
<source src="assets/gifs/ResistorCurrentFlow_EngineeringMindset-Optimized.mp4" type="video/mp4" />
<source src="assets/videos/ResistorCurrentFlow_EngineeringMindset-Optimized.mp4" type="video/mp4" />
</video>
**Figure.** This animation shows how a resistor can be placed between two wires to reduce current flow. Notice how electrons flow freely through the copper wire. With the resistor, these electrons "collide" with other atoms and themselves, which restricts electron flow (and also transforms some energy as heat). Animation from [The Engineering Mindset](https://youtu.be/kcL2_D33k3o?t=891).
{: .fs-1 }
Expand Down
2 changes: 1 addition & 1 deletion electronics/resistors.md
Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ In previous lessons, you learned about the [concept of resistance](electricity-b
## How do resistors work?

<video autoplay loop muted playsinline aria-label="An animated gif showing how resistors can be placed in a circuit to resist current flow.">
<source src="assets/gifs/ResistorCurrentFlow_EngineeringMindset-Optimized.mp4" type="video/mp4" />
<source src="assets/videos/ResistorCurrentFlow_EngineeringMindset-Optimized.mp4" type="video/mp4" />
</video>
**Figure.** This animation shows how a resistor can be placed between two wires to reduce current flow. Notice how electrons flow freely through the copper wire. With the resistor, these electrons "collide" with other atoms and themselves, which transforms the electrical energy to thermal energy and induces a voltage drop. Animation from [The Engineering Mindset](https://youtu.be/kcL2_D33k3o?t=891).
{: .fs-1 }
Expand Down
Loading