Difference between revisions of "Convex Lens"
| Line 21: | Line 21: | ||
| style="height:20px; width:200px; text-align:center;" |A '''convex lens''' [[focus|focuses]] [[parallel]] [[Light Ray|rays]] to a [[Focal Point|focal point]]. | | style="height:20px; width:200px; text-align:center;" |A '''convex lens''' [[focus|focuses]] [[parallel]] [[Light Ray|rays]] to a [[Focal Point|focal point]]. | ||
|} | |} | ||
| + | |||
| + | ==Key Stage 4== | ||
| + | ===Meaning=== | ||
| + | A '''convex''' [[lens]] is a shaped piece of [[glass]] that is thickest at the centre and thinnest at the edges. | ||
| + | |||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:ConvexLens.png|center|100px]] | ||
| + | |[[File:ConvexLensSymbol.png|center|100px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |A picture of a '''convex lens'''. | ||
| + | | style="height:20px; width:200px; text-align:center;" |They symbol used in [[diagram]]s to represent a '''convex lens''' | ||
| + | |} | ||
| + | |||
| + | ===About Convex Lenses=== | ||
| + | : A '''convex lens''' causes [[parallel]] [[Light Ray|rays]] of [[light]] to [[converge]], so it can also be called a [[Converging Lens|converging lens]]. | ||
| + | : A '''convex''' [[lens]] is used to [[focus]] [[light]]. | ||
| + | |||
| + | |||
| + | ===Finding the Focal Length=== | ||
| + | {| class="wikitable" | ||
| + | |- | ||
| + | |[[File:ConvexLensFocalPoint.png|center|500px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |A '''convex lens''' [[focus|focuses]] [[parallel]] [[Light Ray|rays]] to a [[Focal Point|focal point]]. | ||
| + | |} | ||
| + | : The [[Focal Length|focal length]] of a '''convex lens''' is the distance between the [[Focal Point|focal point]] and the centre of the [[lens]]. | ||
Revision as of 10:01, 24 February 2019
Contents
Key Stage 3
Meaning
A convex lens is a shaped piece of glass that is thickest at the centre and thinnest at the edges.
 |
 |
| A picture of a convex lens. | They symbol used in diagrams to represent a convex lens |
About Convex Lenses
- A convex lens causes parallel rays of light to converge, so it can also be called a converging lens.
- A convex lens is used to focus light.
 |
| A convex lens focuses parallel rays to a focal point. |
Key Stage 4
Meaning
A convex lens is a shaped piece of glass that is thickest at the centre and thinnest at the edges.
|
|
| A picture of a convex lens. | They symbol used in diagrams to represent a convex lens |
About Convex Lenses
- A convex lens causes parallel rays of light to converge, so it can also be called a converging lens.
- A convex lens is used to focus light.
Finding the Focal Length
|
| A convex lens focuses parallel rays to a focal point. |
- The focal length of a convex lens is the distance between the focal point and the centre of the lens.