[Bored chemist]

It would be interesting to do experiments mentioned in the articles below.

The experiments were interesting- so people did them.
Here's the first video that Google found for me.(I don't know if it's any good- it just shows that the experiments have been done).

[hamdani yusuf (OP)]

It would be interesting to do experiments mentioned in the articles below.

The experiments were interesting- so people did them.
Here's the first video that Google found for me.(I don't know if it's any good- it just shows that the experiments have been done).

I've seen this video not long after it was uploaded.
What's interesting is the conclusions of the video from 5:28 onward aren't widely accepted, refuted, nor even discussed.

[hamdani yusuf (OP)]

This is an interesting experiment you can do to demonstrate the radio wave generated by high tension lines. You can also measure the polarization angle of the radio wave.

High Tension Line Radiation Detector!

Ok, here is a simple device that you can build, with a 3D printer, to measure the radiation coming off the high voltage, high tension lines.. that are running though your local neighborhood... just a couple of dipole antenna and a neon light bulb.. and you can be drawing in power from the air! Yes I am calling this radiation.. some might consider this near field coupling... but lets not spit hairs! The fields are intense... and definitely penetrating you body! Fun science project! See my thingiverse page, for the free STL file.. to print your very own High Tension Line Radiation Detector!!

[hamdani yusuf (OP)]

I just found another use of radio wave.

Strong Perseid Meteor Echo
A good quality echo, registered at the end of the Perseid meteor stream, in the Summer, showing an intense trail that remained almost uninterrupted for 45 seconds.

http://hebweather.net/meteor-echoes/
What you can hear and see in this continuous waterfall display (the technical term) are meteor echoes, caused by the reflection of radio waves on the hot ionised air that a meteor leaves behind after it disintegrates while entering Earth?s atmosphere.

The most active daily period is the one that precedes sunrise (GMT time zone), but echoes can be seen and heard at any time of the day, more of them during the meteor showers. As long as the waterfall continues scrolling, there is a possibility of registering a meteor echo. Sometimes, satellites are also detected, and the International Space Station is almost regularly observed.

The signals will appear in the area between 1040 and 1100Hz, marked on the top white band by the big horizontal square bracket. The constant background sound is simply noise, while the meteor echoes will have a more high pitched tone, different from the base one. Furthermore, the longer and more complex an echo is, the longer and more intricate its sound will be.

[hamdani yusuf (OP)]

Detection of radio wave can be very simple.

Tuned Antennas Lighting Up LEDs

In this video, I demonstrate how resonant antennas which are cut to specific lengths, are able to light up LEDs, if you transmit on their resonant frequencies. For those who want an expanded description on how to build one of these antennas, please watch this video.

[hamdani yusuf (OP)]

RF Fundamentals

This Bird webinar covers RF Fundamentals

Topics Covered:
Frequencies and the RF Spectrum
Modulation & Channel Access
Antennas & EM Wave Losses
Cable/Connector Losses
Mismatch & Max Power Transfer
What is a dB and how is it used?

[hamdani yusuf (OP)]

The Lualualei Very Low Frequency Transmitter near Honolulu

Lualualei VLF transmitter site is located about 45 minutes west of Honolulu, and the giant antenna masts are easily visible at a distance when exploring that area. You can easily drive to the perimeter of the military base and get close-up view of the antennas through the  fence and see not only the VLF equipment, but also HF antennas  and satellite domes.

In the video we look at some of the interesting items that are easily visible, and also do simple experiment so show salt water prevents communications with submarines at typical radio frequencies because of the skin depth effect that confines electrical activity to near the surface of a conductor. We also briefly looks at HF or shortwave communications.


Looks like I goofed! The antenna on the Missouri is not an umbrella. Here is some great info from  @jeffreyyoung4104  (Thanks so much Jeffrey!):

The bow antenna on the Missouri is actually two antennas in one, First, it is a conical monopole, then a discone. It can operate from 10 to 30 MHz on the discone, and from 6 to 10 MHz on the monopole. It is the primary antenna of the Amateur radio station KH6BB aboard the Missouri.

There are also wire dipole antennas aboard the ship that allow the Amateur radio station to operate 160, 80 and 40 meters on the fundamental frequency, as well as many other bands on the odd harmonic frequencies.

The Surface ships would not use VLF frequencies, as that was reserved for the submarines, and the surface ships didn't have to worry about radio waves not penetrating water.

[hamdani yusuf (OP)]

Radio Frequency (RF) Signal Detector

Presentation of a radio frequency signal detector. Details of its usage with an example. Ideal for the detection of radio emission items like wireless audio and video devices. Product available at Spytronic.com

This device can be useful.

[hamdani yusuf (OP)]

Electro-Magnetic Field Detector - User-Friendly Unit: Review & Demonstration

In today's video, we'll review the KENMIC EMF Reader: a user-friendly device that reads both electronic fields and magnetic radiation on one screen. Toggle between units and temperatures, as well as set thresholds for the alarm.