Waves of two different frequencies crossing a regular square lattice
In this simulation, we compare the effect of a regular square grid of scatterers on sources of different frequency. Not so surprisingly, the waves pass the lattice more easily than in the case of a random lattice, and one can observe some interesting resonance effects.
The frequency of the lower source is three times the frequency of the upper one. The resulting wavelengths are such that the open intervals in the grating are roughly between both wavelengths. As a result, waves of the lower source pass the grating a bit more easily, as can be best seen on the energy plot.
This video has two parts, showing the same evolution with two different color gradients:
Wave height: 0:00
Averaged wave energy: 1:11
In the first part, the color hue depends on the height of the wave. In the second part, it depends on the energy of the wave, averaged over a sliding time window. The contrast has been enhanced by a shading procedure, similar to the one I have used on videos of reaction-diffusion equations. Th
2 views
246
80
4 weeks ago 01:00:27 2
[sincope ] 1 HOUR OF POST-PUNK BEATS 2024 VOL. 3 | EYEDRESS, MOLCHAT DOMA, EKKSTACY, THE CURE, ARTEMAS
4 weeks ago 00:10:23 1
OPETH`S Epic Headline Show at Bloodstock 2024 - 007 Ghost of Perdition
4 weeks ago 00:05:57 1
OPETH`S Epic Headline Show at Bloodstock 2024 - 005 In My Time of Need
4 weeks ago 00:10:24 1
OPETH`S Epic Headline Show at Bloodstock 2024 - 003 Demon of the Fall
4 weeks ago 00:00:13 1
The destruction of a Ukrainian Armed Forces pickup truck by an FPV drone crew of the North group of troops in the Kharkov region
4 weeks ago 00:00:06 1
The destruction of a stronghold with a machine-gun crew of the Ukrainian Armed Forces by an FPV drone operator of the North grou
4 weeks ago 00:16:03 5
[Aaron Game Mac 🍏] ИГРЫ НА МАК М1 👨🏻💻 Как играть в игры на новых Macbook air M1 Macbook pro M1 🎮 Тест игр на М1
4 weeks ago 00:06:04 1
Dream Theater - Distant Memories (Live In London) Set 2-010. Scene Seven: I. The Dance of Eternity
4 weeks ago 00:01:04 1
Combat work of the crews of the Msta-S self-propelled howitzers of the West group of forces in the area of a special military
4 weeks ago 00:32:55 1
Electro Post Punk _ Darkwave _ Coldwave _ Doomer Mix _CHERNO
4 weeks ago 00:00:48 1
Tula paratroopers’ artillery destroyed Ukrainian infantry in Korenevsky district of Kursk region
4 weeks ago 00:01:32 1
In the Zaporozhye region, the Grad MLRS crews of the Dnepr group of troops are actively suppressing enemy targets
4 weeks ago 00:01:40 1
[Stash Magazine] Nokia - “Dot“
4 weeks ago 00:00:37 1
An army aviation crew on a Ka-52M helicopter as part of a mixed tactical group launched an air strike with air missiles against
4 weeks ago 00:01:43 1
[Red Bull] Extreme Sailing Off The Coast Of Saint Petersberg
4 weeks ago 00:00:41 1
Crews of Russian multi-role super-maneuverable fighters working
4 weeks ago 02:00:14 18
[Armin van Buuren] A State of Trance Episode 1201 ( @astateoftrance )
4 weeks ago 00:03:02 70
Russian Strikes Pound Ukrainian Energy Infrastructure
4 weeks ago 01:46:36 1
2024 Macys Thanksgiving Day Parade in New York City 4K [FULL]
4 weeks ago 02:00:14 870
A State of Trance Episode 1201 (@astateoftrance)
4 weeks ago 01:00:22 1
[Meditational State • Healing Music] 91% of this Audio Goes DIRECTLY to your Brain & Ignores your Ears (EMDR Delta Wave Technolo
4 weeks ago 00:09:14 2
[Red Bull] Waimea River Surfing and Powder Skiing Hawaiian Style | Who is JOB 5.0: S4E5
4 weeks ago 02:00:14 920
Armin van Buuren – A State Of Trance 1201
4 weeks ago 00:05:17 1
[CNBC Television] Economic has hit bottom: Carlyle Group’s David Rubenstein