eggy/eifueo
1
1
Fork 1
Code Issues 2 Pull Requests Releases Wiki Activity

phys: nodal line numbering

Browse Source
This commit is contained in:
eggy 2021-01-11 17:09:49 -05:00
parent 63862db2ed
commit a2214ab349
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
docs/sph3u7.md
View File

@ -791,6 +791,8 @@ A light wave that is **coherent** is **monochromatic** (of the same wavelength)
By using mafs involving rays along a nodal line, the separation, $s$ between **nodal/anti-nodal** lines on the distant surface can be related to the distance from the slits to the screen, $D$, the separation between the slits, $d$, and the wavelength $\lambda$.
$$s=\frac{\lambda D}{d}$$
The number of nodal lines depends on the ratio $\frac{d}{\lambda}$.
**Dark fringe** positions on the screen are equally spaced at the same separation $s$ between the bright fringes. The perpendicular bisector with a length of $D$ is a **bright fringe**.
<img src="/resources/images/fringe-slit-derive.png" width=700>(Source: Kognity)</img>