Heater box question

[anlauto]

I just don't remember learning that in any classes during my college days, in either of my Electrical or Mechanical engineering degrees.  I wrote the specifications, designed and built the truck to carry the solid rocket engines for the space shuttle...

Your Mommy and Daddy must be so proud 

I never got past grade 12 

[A.Gramz]

I guess it uses the Venturi principal. 

Similar to a air gun blower

https://www.google.ca/search?q=blow+gun+venturi+how+they+work&client=safari&hl=en-ca&prmd=isvn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwirkKe6nrTdAhWC7IMKHZo4CfcQ_AUIESgB&biw=375&bih=553#imgrc=TGk-VydiSbId7M:

[RJChallenger]

They air guns have holes in the nozzle , so stuupid people don't put the nozzle against themselves and pull the trigger. Its more of a safety feature.

[A.Gramz]

They air guns have holes in the nozzle , so stuupid people don't put the nozzle against themselves and pull the trigger. Its more of a safety feature.

Ya you are correct there.  But it was just to show the principal of how a gap/hole can pull surrounding air in and increase air flow. 

[HEMICUDA]

I just don't remember learning that in any classes during my college days, in either of my Electrical or Mechanical engineering degrees.  I wrote the specifications, designed and built the truck to carry the solid rocket engines for the space shuttle...

Your Mommy and Daddy must be so proud 

I never got past grade 12 

Proud? Not really, they were expecting med school.  I'm sure your mommy and daddy were thrilled for you to just finish high school.

[RUNCHARGER]

There was high school? I must have missed that.