Uploaded December 2016 | Updated September 2026, 1 week ago
Fire! Watch my newly constructed Ruben's Tube in action with Camilo James' cover of Chet Atkins' Happy Again (see link below). I've only been playing around with this for a couple days now, so I'm still trying to get the best settings figured out.
Song used with permission from the highly talented Camilo James:
youtube.com/watch?v=LcjV-tigMqE
I'll be making a How-To video in the near future so you can build this yourself!
Here are a couple notes:
1) When I shot this video, there was a draft in the room which is why you see the flames dance around a little bit. When the fan in the room is not on, the flames are all the same height and completely stationary. I don't have control over the fan.
2) In some Ruben's Tube videos, you'll see gigantic flames, which might look cool, but I like the smaller flames which I find to have less hysteresis (of the flame height variation) after coming down from a crescendo.
3) This video turned out brighter than I would have liked, and I have videos where I've used an ND filter and it looks pretty cool. I'll be posting some of those videos in the future.
4) I find that it's easier to see the waveforms if the video is smaller, so if you're having trouble seeing them, don't put the video in fullscreen, and sort of look past the flames, if you know what I mean.
5) One of the reasons the amplitude of the waveforms is small is because I'm using a low volume Bluetooth speaker. I'm looking into getting a better speaker for future videos.
Thanks for reading all that; you're a champ!
Fire! Watch my newly constructed Ruben's Tube in action with Camilo James' cover of Chet Atkins' Happy Again (see link below). I've only been playing around with this for a couple days now, so I'm still trying to get the best settings figured out.
Song used with permission from the highly talented Camilo James:
youtube.com/watch?v=LcjV-tigMqE
I'll be making a How-To video in the near future so you can build this yourself!
Here are a couple notes:
1) When I shot this video, there was a draft in the room which is why you see the flames dance around a little bit. When the fan in the room is not on, the flames are all the same height and completely stationary. I don't have control over the fan.
2) In some Ruben's Tube videos, you'll see gigantic flames, which might look cool, but I like the smaller flames which I find to have less hysteresis (of the flame height variation) after coming down from a crescendo.
3) This video turned out brighter than I would have liked, and I have videos where I've used an ND filter and it looks pretty cool. I'll be posting some of those videos in the future.
4) I find that it's easier to see the waveforms if the video is smaller, so if you're having trouble seeing them, don't put the video in fullscreen, and sort of look past the flames, if you know what I mean.
5) One of the reasons the amplitude of the waveforms is small is because I'm using a low volume Bluetooth speaker. I'm looking into getting a better speaker for future videos.
Thanks for reading all that; you're a champ!
![Explained: Rain Gutters [Airplanes]
Rain gutters are little strips of material above doors that allow you to stay dry as you get on or off a plane. They also help keep the interior of the plane dry.
Horizontal rain gutter:
http://www.airliners.net/photo/Untitled-%28Trans-World/Lockheed-L-1011-385-1-TriStar/0197040/L/&sid=030cda10fed5df9cd077f6437194798e
Slanted rain gutter:
http://www.airliners.net/photo/Trans-World-Airlines/Lockheed-L-1011-385-1-15-TriStar/0689474/L/&sid=030cda10fed5df9cd077f6437194798e Explained: Rain Gutters [Airplanes]](https://i.ytimg.com/vi/u4FNaPu9-hQ/mqdefault.jpg)
![Explained: Taylor-Maccoll Conical Flow Overview [Taylor-Maccoll]
This is the first video in a series of videos about the supersonic flow over a cone at 0 degrees angle of attack. This is also known as Taylor-Maccoll conical flow, after the two guys that derived the equations and obtained solutions for this type of problem.
This video aims to introduce the general problem description and lay out the basic steps for the derivation/solution. More videos will follow as described in the video. Explained: Taylor-Maccoll Conical Flow Overview [Taylor-Maccoll]](https://i.ytimg.com/vi/v3EqbYGI_Hg/mqdefault.jpg)
![Explained: Isentropic Relations
In this video, we will go through the derivation of the isentropic relations. We will start with the combined 1st & 2nd law of thermodynamics (video [1] below for derivation of combined law). We will first assume a thermally perfect gas (video [2] below for explanation of e = e(T) and h = h(T)), and then later constrain the expression down for a calorically perfect gas (video [3] below for explanation about specific heats for TPG and CPG). To obtain the final isentropic relations, we will set the change in entropy equation equal to zero, and solve for the relationship between pressure, temperature, and density ratios between states 1 and 2.
RELEVANT VIDEOS
[1] : https://goo.gl/soiSr9
[2] : https://goo.gl/pdL6A8
[3] : https://goo.gl/hG2sJn
REFERENCES
► Notes by Matt MacLean
► Modern Compressible Flow, Anderson
► Elements of Gasdynamics, Liepmann and Roshko
► Gas Dynamics, Zucrow and Hoffman Explained: Isentropic Relations](https://i.ytimg.com/vi/vBNIp8cz1ik/mqdefault.jpg)

![Explained: Specific Heats (Cp & Cv)
In this video we will derive the expressions for the specific heats at constant volume and constant pressure from the combined first and second law of thermodynamics (video [1] below).
The expressions become simpler when we assume a thermally perfect gas, where the energy and enthalpy are only a function of temperature (video [2] below).
RELEVANT VIDEOS
[1] : https://goo.gl/soiSr9
[2] : https://goo.gl/pdL6A8
REFERENCES
:: Notes by Matt MacLean
:: Modern Compressible Flow, Anderson
:: Elements of Gasdynamics, Liepmann and Roshko
:: Gas Dynamics, Zucrow and Hoffman Explained: Specific Heats (Cp & Cv)](https://i.ytimg.com/vi/vmrXXN5d4iI/mqdefault.jpg)
![Explained: Slider GUI [MATLAB]
This video explains how to code a slider in a MATLAB GUI. It also shows how to change the Min, Max, and Value arguments to alter the range of the slider. Explained: Slider GUI [MATLAB]](https://i.ytimg.com/vi/wGaPLzaHIps/mqdefault.jpg)
![Explained: Tilde to Discard Output [MATLAB]
Sometimes functions return too much information, or more than you need/want. To suppress some of the output and keep your code clean, you can use a tilde in the place of variables. Explained: Tilde to Discard Output [MATLAB]](https://i.ytimg.com/vi/wg7GTwsZL-Q/mqdefault.jpg)
![Explained: NACA 4-Digit GUI Part 4/10 [MATLAB]
This is the fourth video in my 10-video series on coding a program in MATLAB to compute, display, and save a NACA 4-digit airfoil.
IN THIS VIDEO:
We code the airfoil type callback. This edit text box reads in the string of the airfoil that the user wants to compute and plot. After we read in the value of the airfoil, we check to make sure that it is only four digits. If more or less, it displays an error message and makes sure the airfoil cant be plotted.
IN THIS SERIES:
Part 1/10 : https://goo.gl/9UBgbo
Part 2/10 : https://goo.gl/jRRcYJ
Part 3/10 : https://goo.gl/rSVLHo
Part 4/10 : https://goo.gl/HwHB39
Part 5/10 : https://goo.gl/AlDne8
Part 6/10 : https://goo.gl/7n1QP7
Part 7/10 : https://goo.gl/nTGleR
Part 8/10 : https://goo.gl/ez247P
Part 9/10 : https://goo.gl/8mXYcc
Part 10/10: https://goo.gl/ovBlbW Explained: NACA 4-Digit GUI Part 4/10 [MATLAB]](https://i.ytimg.com/vi/x8ls10Euy-k/mqdefault.jpg)

![Explained: Radio Button GUI [MATLAB]
A radio button can be used for selection and deselection of an option. This video shows how to get the value of a radio button in a MATLAB GUI. Explained: Radio Button GUI [MATLAB]](https://i.ytimg.com/vi/xN2fMYZgEOw/mqdefault.jpg)
