![Explained: Normal Vector [CFD] @JoshTheEngineer](https://i.ytimg.com/vi/mixm2y8ukTg/maxresdefault.jpg)
Uploaded July 2013 | Updated September 2026, 2 weeks ago
This is a video describing the general technique of finding a vector normal to another vector, with an emphasis on its relation to CFD codes.
This is a video describing the general technique of finding a vector normal to another vector, with an emphasis on its relation to CFD codes.
![Explained: Normal Vector [CFD]](https://i.ytimg.com/vi/mixm2y8ukTg/mqdefault.jpg "Explained: Normal Vector [CFD]
This is a video describing the general technique of finding a vector normal to another vector, with an emphasis on its relation to CFD codes.")
![Explained: Line And Scatter Plot [Excel]](https://i.ytimg.com/vi/nFylutP84ro/mqdefault.jpg "Explained: Line And Scatter Plot [Excel]
This video explains how to display both line data and scatter data on the same plot in Excel.")
![Explained: Hydrogen Burnoff Igniters [Space Shuttle]](https://i.ytimg.com/vi/pahefmotTNk/mqdefault.jpg "Explained: Hydrogen Burnoff Igniters [Space Shuttle]
What are the sparks seen beneath the space shuttles main engines just before launch? These sparks come from the hydrogen burnoff system that makes sure there is no excess hydrogen near the engines before ignition.
The sparks from the igniters can be seen in the video below at 1:09.
http://www.youtube.com/watch?v=T7vGqQUhciE")
