waves - Why do we demand that $\lambda \ll \text{size of slit
![](https://i.stack.imgur.com/whXqh.png)
I'd appreciate it if anyone could explain to me why do we demand that the wavelength will be much smaller than the distances between the slits in order to see wave diffraction when performing Young's
![](https://www.siyavula.com/read/za/physical-sciences/grade-11/2d-and-3d-wavefronts/images/d30f9d378a4d8436aa8feab49dec37eb.png)
6.5 Diffraction through a single slit, 2d and 3d wavefronts
![](https://personal.math.ubc.ca/~cass/courses/m309-03a/m309-projects/schan/pic5.jpg)
pic5.jpg
![](https://arxiv.org/html/2309.06345v3/x4.png)
Coexistence of localized and extended states in the Anderson model with long-range hopping
![](https://tuitionphysics.com/wp-content/uploads/2021/05/comparing-single-slit-and-multiple-slit-diffraction-300x200.jpg)
Diffraction of Waves: Single Slit & Multiple Slit Diffraction
qph.cf2.quoracdn.net/main-qimg-3cd68f9b8b29f60592c
![](https://media.springernature.com/lw685/springer-static/image/chp%3A10.1007%2F978-3-030-60177-5_5/MediaObjects/502818_1_En_5_Fig6_HTML.png)
T-Junctions of Rectangular Waveguides with Vibrator-Slot
![](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-021-93295-5/MediaObjects/41598_2021_93295_Fig1_HTML.png)
Microscale whispering-gallery-mode light sources with lattice-confined atoms
![](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-020-77836-y/MediaObjects/41598_2020_77836_Fig1_HTML.png)
Microfluidic droplet generation based on non-embedded co-flow-focusing using 3D printed nozzle
![](https://www.epfl.ch/research/domains/swiss-plasma-center/wp-content/uploads/2020/03/Reimerdes_IAEA_2020_Fig2.jpg)
28th IAEA Fusion Energy Conference (FEC 2020) (10-15 May 2021) · Indico for IAEA Conferences