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You cannot see, hear, smell, taste, or touch radiation. You can only detect radiation with special equipment.
Detecting Non-Ionizing Radiation (NIR)
Since non-ionizing radiation is simply low-energy waves of the electromagnetic spectrum (radio waves or microwaves), detection is hard. The easiest way is to look for any nearby antennas, satellite dishes, or radio towers. Or, if you can listen to your radio, watch TV, have cell service or use wireless internet, Bluetooth, wireless mouse or keyboard you are definitely being exposed to NIR.
To measure the quantity of radio/microwaves you will need an EMF (electromagnetic field) meter. A very simple way to determine the wavelength of NIR is the length of the antenna. As a general rule, the shorter the antenna, the more energized the waves. To pick up radio waves, an antenna must be the length of the longest wavelength. You can compare the antenna length to the electromagnetic spectrum chart to find the energy intensity.
Detecting Ionizing Radiation
Ionizing radiation can be measured very precisely — much more precisely than other potentially hazardous materials. One of the basic measuring instruments is the Geiger-Muller counter. The instrument consists of a detector set at the end of a probe with counting electronics. This instrument counts the number of radioactive particles entering a sensitive detection chamber, and translates that signal into a needle movement on an analog dial or a value displayed on a screen.
The Geiger counter emits a click for every particle, so with only background radiation, the instrument clicks every few seconds. In a high radiation environment, it clicks rapidly in proportion to the radiation level. This way, the user gets a visible as well as audible measurement of radioactivity.
Some people receive exposure to radiation as part of their employment (radiologists and nuclear plant workers). Worker radiation exposures are carefully
Semi-direct operated solenoid valves combine the properties of direct and indirect valves. This allows them to work from zero bar, but still they can handle a high flow rate. They look somewhat like indirect valves and also feature a movable membrane with a small orifice and pressure chambers on both sides. The difference is that the solenoid plunger is directly connected to the membrane.
Rey Ybarra talks to the United Chamber of Commerce about the digital revolution. He explains that he is a content producer and radio, television, and Internet talk show host.
The band Coal Chamber with their song "Friend" synchronized with Herman the cartoon
lol...Walking on the wall of the chamber
Music: Kevin MacLeod Shaving cream is placed into a vacuum chamber, then the vacuum is turned on. The chemicals are arranged such that there are many pockets of air trapped inside the shaving cream. The air pockets in shaving cream will expand in a vacuum. As the pressure gradually decreases the volume of the shaving cream get bigger and eventually fills the jar. This is a great example of Boyle's Law which shows an indirect relationship between pressure and volume.
13 secs speedrun in Portal Chamber 13
This is a speed run for test chamber 13 that is done in 18 seconds for the half life 2 mod portal.
Portal Test Chamber 8, this video shows you how to complete it or see what the game looks like.
Portal Test Chamber 9, this video shows you how to complete it or see what the game looks like.
Portal Test Chamber 10, this video shows you how to complete the level.
This is a speed run of test chamber 15 from the challenge maps for portal. It was done in 48 seconds. The goal is 54 seconds.
This is a least portals run of test chamber 15 for portal. It was done in 14 portals, the goal.
Portal Test Chamber 18, this video shows you how to complete it. More videos coming out soon.
Portal: Test Chamber 08 Completion by iMPR3SSiON