A gas-filled tube, also commonly known as a discharge tube or formerly as a Plücker tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope. Gas-filled tubes exploit phenomena related to electric discharge in gases, and operate by ionizing the gas with an applied voltage sufficient to cause electrical conduction by the underlying phenomena of the Townsend discharge. A gas-discharge lamp is an electric light using a gas-filled tube; these include fluorescent lamps, metal-halide lamps, sodium-vapor lamps, and neon lights. Specialized gas-filled tubes such as krytrons, thyratrons, and ignitrons are used as switching devices in electric devices. The voltage required to initiate and sustain discharge is dependent on the pressure and composition of the fill gas and geometry of the tube. Although the envelope is typically glass, power tubes often use ceramics, and military tubes often use glass-lined metal. Both hot cathode and cold cathode type devices are encountered. (Wikipedia).
This video will show how to make a vacuum pump, a device that can be used to suck the air out of sealed environments. This is the same pump I use to operate my vacuum cannon seen here: http://youtu.be/CVL99yIB3NQ A clear vacuum chamber such as the one seen in the video can be obtained by
From playlist Practical Projects & Skills
Hydraulic cylinder with fixed piston
Green cylinder with machine table reciprocates. Pressure fluid is conducted into cylinder via holes on fixed piston rod. The hoses can be stationary. In case using holes on the cylinder the hoses have to move with the cylinder. The arrows show flows of pressure fluid.
From playlist Mechanisms
Steam Vacuum - Making/How it Works
A steam vacuum is a vacuum that's create by making steam in a container (I use a microwave and a kettle) and then rapidly cooling it back to water (condensing it), leaving behind a vacuum. This vacuum is a low pressure are that dramatically sucks in more water and, if in a flexible contain
From playlist Science Projects
DIY SOLAR TUBES EVACUATED VACUUM TUBE SOLAR HOT WATER Boil water with the power of the SUN
Boil water just by placing it in the sun. http://www.greenpowerscience.com/ This is a simple process to make your owns solar evacuated vacuum tubes from any bottle and a $2 vase from Walmart.
From playlist Evacuated Solar Vacuum Tubes
Solar Evacuated Tube Vacuum Tubes DIY Test in the Sun
Solar Evacuated DIY solar tubes. This is part 2 of the Solar Tubes with a control bottle and sun exposure. My website link for the results and videos are http://www.greenpowerscience.com/SOLARTUBE.html
From playlist Evacuated Solar Vacuum Tubes
What Happens When You Put Bubble Solution In A Huge Vacuum Chamber?
In this video I put bubble solution in my vacuum chamber. I don't need to actually blow bubbles in the vacuum chamber because once it starts boiling it will make its own bubbles! Watch as the chamber fills with bubbles once I turn on the vacuum pump. The most amazing part is once it is fil
From playlist The Action Lab Vacuum Chamber Awesomeness!
Solar Water Heating - Part 2: Evacuated tubes and flat plate collector solar geysers
In this video I discuss the basic differences between flat plate and evacuated tube solar geyser systems. I also explain how a GeyserWise works.
From playlist Solar Water Heating
Chemistry of Gases (14 of 40) Density of Gases: Example 1 (Scuba Tank)
Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to find the density of the gas in a scuba tank.
From playlist CHEMISTRY 10 THE CHEMISTRY OF GASES
Pressure Booster Single Acting
Hydraulic pressure booster ( or intensifier ) converts normal shop-line air pressure to high-pressure hydraulic power. This is most economical way of obtaining high pressure oil if pressurized air available.
From playlist Pneumatic and Hydraulics
Bio Fuel Storage: Building A Gasometer
In this video I build a wood gas storage device that cleans and pressurizes the gas all in one! Thanks to my sponsor Squarespace you can make a great website easily! Check them out at: https://www.squarespace.com/nighthawk In case you missed it, here's my last video where I built the gass
From playlist Combustibles
How it works, inventors, development, types of low pressure gas-discharge lamps. The Neon Lamp has occupied a unique niche in modern society since 1915. It was and will likely continue to be the most attractive form of light for certain types of signage. The Neon and Argon Glow Lamps wer
From playlist Lighting Technology
Pop-Pop Boats Are Weirder Than You Think
Check out Anker 521 Portable Power Station: https://ankerfast.club/3vq4RRe #AnkerPowerHouse #PowerStation I got a glass pop-pop boat made (or putt-putt boat, or a Ponyo boat!) to see once and for all what's going on inside! The Entropy video featuring the Stirling engine is here: https:/
From playlist Experiments
DIY Hydrogen/Oxygen Generators From Grocery Store Items (HHO Fuel Cells & Split Cell Electrolysis)
In this video we look at several electrolysis designs and their function. Check out this video's sponsor, MEL Physics! Use the promo code "nighthawk" for 50% your first set of experiments: https://melscience.com/s3p/ Most DC power supplies will work adequately well for electrolysis, the m
From playlist Practical Projects & Skills
Propane Fireball Cannon - How to Shoot Blue Fireballs!
Craig Beals explains how to make a propane fireball cannon using a propane torch, vinyl tubing, pvc and a soda bottle - and the science behind the combustion reaction that makes it work. Materials listed on my website at: https://www.bealsscience.com/single-post/2016/02/08/Propane-Fireball
From playlist Science Experiments!
Making sulfuric acid (method 1)
In this video we are making sulfuric acid by bubbling sulfuric acid. I forgot adding the explanations while editing. Here you go: S + O2 -------} SO2 SO2 + H2O ----------} H2SO3 H2SO3 + H2O2 ---------} H2SO4 + H2O Overall reaction: S + O2 + H2O2 ---------} H2SO4 This reaction cannot
From playlist Inorganic Chemistry
This is part 2 in a 4 part series on rocket motors, rocket nozzles and nitrous oxide. We start by showing you how to fabricate your own fuel grains and then we move on to the nozzles. Previous video: https://youtu.be/AFyzTqhM6is Related videos: https://youtube.com/playlist?list=PLzrI14lO
From playlist Rockets
Making the world's most expensive carbonated water!
For this video, I'll be making the world's first real diamond water. To do this, I'll be burning diamonds, which are nearly pure carbon (and definitely not "forever"), to make diamond CO2 gas and then using that CO2 to make extremely expensive carbonate water. Contest link: http://bit.ly/
From playlist Long Projects (25 min+)
Pressure and the simple mercury barometer | Physical Processes | MCAT | Khan Academy
Created by Ryan Scott Patton. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/dideal-gas-law?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phas
From playlist Physical processes | MCAT | Khan Academy
Geyser Exhibit I Exploratorium
Geyser is a working model of a natural geyser. A large bowl of water is supported over a long, thin tube which runs down to a glass chamber filled with water heated by a heating element. As the water in the chamber begins to boil, air and water are shot up the tube into the air. Cool water
From playlist Hands-on Exploratorium
Having a Gas with Water- Science Snack Activity
Use electricity to break water into its elemental components. Build a simple electrolysis device using a 9-volt battery wrapped in oil-based modeling clay, trap the two gases produced, and end with a bang as you test their composition. Full instructions for this activity are available at
From playlist Science Snacks | Exploratorium