[hamdani yusuf (OP)]

The difference between multilayer flat strips in the last video and multilayer metal grating which produces "normal" refraction seems to be merely due to the lack of longitudinal conductor component in the flat strips. So I plan to investigate further about longitudinal propagation in microwave in the next videos.
Do you have any idea about how could this be done?

[whichosedn51]

Thank you for this great information. I was interested always how microwave works

[hamdani yusuf (OP)]

Thank you for this great information. I was interested always how microwave works

I'm glad I can help.
My intention of uploading the videos on youtube is to provide access to scientific equipment for those who is interested but cannot afford it just for their curiosity. So if you have any interesting idea, just let me know. I hope I can try to make it happen.
 

[hamdani yusuf (OP)]

During my investigation on longitudinal propagation of microwave, I inadvertently got absorption effect by a metamaterial object. The incoming microwave doesn't seem to go anywhere out of the object. Only small amount of microwave is transmitted, and the reflected microwave is also small. It can't be detected in any other directions, as if it is retained inside the object. Perhaps the energy is converted to another form, likely in to heat, but currently I have no means to confirm that.

[CristinaFinn]

Indeed Informative. I was just looking how microwave behave and got it here

[hamdani yusuf (OP)]

Indeed Informative. I was just looking how microwave behave and got it here

Thank you. I'm glad to help.
Here is my latest video investigating propagation of longitudinal microwave using meander sheet.

[hamdani yusuf (OP)]

Hi, long time no see.
I have finally finished uploading new videos investigating behavior of microwave when interacting with various materials. Here is one continuing the experiment on longitudinal oscillation of microwave, this time we use elongated grids.

[hamdani yusuf (OP)]

This video introduces a new type of apparatus to explore microwave optics. The partial polarizing filter passes through microwave oscillating perpendicular to its axis while only partially blocks/reflects microwave oscillating parallel to its axis.

[hamdani yusuf (OP)]

This video demonstrates axis rotation by partial polarizer.

[hamdani yusuf (OP)]

This video demonstrates interference of microwave by partial polarizer. By plotting the position of constructive and destructive interference,  we can calculate the effective wavelength of the microwave.

[hamdani yusuf (OP)]

Here we tried to produce circularly polarized microwave by using two partial polarizers to generate phase shift in vertical axis while leaving horizontal axis undisturbed.

[AustinnEp]

Assuming that bodies at rest with zero mass necessarily have zero energy, this implies the famous formula E = mc2  but only for bodies which are at rest.

[jeffreyH]

Assuming that bodies at rest with zero mass necessarily have zero energy, this implies the famous formula E = mc2  but only for bodies which are at rest.

How can you have a body with zero mass 'at rest'. By definition it has ZERO REST MASS! What are you talking about?

[Bored chemist]

Assuming that bodies at rest with zero mass necessarily have zero energy, this implies the famous formula E = mc2  but only for bodies which are at rest.

Does that have anything to do with this thread?

[hamdani yusuf (OP)]

I started this thread to demonstrate behavior of electromagnetic wave, especially in microwave range, which has convenient wavelength to observe its interaction with objects having comparable size. Along the way, I found that many widespread explanations and analogies on behavior of electromagnetic wave don't match with experiment results.
Newer videos are meant to try to resolve questions arise from previous videos. They are like collecting pieces of puzzle wich will be assembled to form a complete picture accurately represents the behavior of microwave.
I think I already have a good model which can explain phenomena like transmission, reception, reflection, diffraction,     interference, absorbsion, speed change, phase shift, polarization axis rotation, linear and circular polarization. I still need more pieces of puzzle to explain refraction (either with positive or negative refractive index). From my experiment results, it turns out that propagation slowdown alone is not sufficient to explain change of direction in refraction.

[hamdani yusuf (OP)]

When I prepared these videos, I lost my voice due to laryngitis. So I tried to use online text to speech engine to generate the voice over. Here I used  https://ttsmp3.com/ . It turns out this process is faster and easier for me.
This video explores interaction between two partial polarizers.

While this video shows the behavior of microwave when interacting with thin wires arranged to form a prism. In an older video I have shown that a prism made of metallic cylinders can emulate behavior of normal prisms such as refraction, surface reflection, and internal reflection.

Spoiler: show

Those phenomena were not observed here

[hamdani yusuf (OP)]

I have uploaded a new video trying to show the blocking mechanism of microwave by various arrangements of conducting material. Those arrangements are modified versions of microwave polarizer used in previous videos.

Spoiler: show

It shows that the same amount of conductor can have different effectiveness in blocking microwave. The result may seem counterintuitive, where an arrangement which have large gaps can be a more effective blocker than another arrangement which is more evenly spread, even though they have the same amount of conductor.
Due to its length, I'll upload my effort to explain the result in another videos, so stay tuned.

[hamdani yusuf (OP)]

And my explanation for the result we get in previous video is shown here

Spoiler: show

The video explains that an obstruction blocks microwave propagation by generating reactive wave with reversed polarity to the original one. The original wave is canceled due to destructive interference.
The explanation is based on antenna theory.

[hamdani yusuf (OP)]

I found a short video explaining how a dipole antenna works in a simple way.

[hamdani yusuf (OP)]

Here is the supporting evidence for the explanation given in previous video about microwave blocking mechanism using a model of antenna as receiver and transmitter at once, and followed by superposition principle.