video thumbnail 32:31
Measuring human digestive efficiency vs. a flame

2021-02-22

[public] 187K views, 19.6K likes, 110 dislikes audio only

channel thumbApplied Science

"200 Calories" on a nutrition label doesn't describe the total flammable caloric content. I explore the differences between digestible and flammable calories using a homemade calorimeter with glass windows.

Pressure sensor:

https://www.digikey.com/en/products/detail/te-connectivity-measurement-specialties/M5842-000005-10KPG/7592854

Schedule 160 pipe on McMaster:

https://www.mcmaster.com/7733K259/

32 ga nichrome wire:

https://www.amazon.com/gp/product/B07DL4DSWD/

Power supply (used for ignition wire):

https://www.amazon.com/gp/product/B07SS77N7K/

Keithley 6.5 digit multimeter:

https://www.tek.com/tektronix-and-keithley-digital-multimeter/dmm6500

Tek MSO 4 series oscilloscope:

https://www.tek.com/oscilloscope/4-series-mso-mixed-signal-oscilloscope

Soylent:

https://soylent.com/

Hmm, I perhaps mis-remembered that 20% stat from Sally Le Page's video: https://www.youtube.com/watch?v=92F_yocEchA There may have been another source that indicated the 20% number. This will probably show up in my future video on macronutrients.

Support Applied Science on Patreon:

https://www.patreon.com/AppliedScience


Intro
/youtube/video/9wZ0wTqJIxY?t=0
Design
/youtube/video/9wZ0wTqJIxY?t=175
Glass windows
/youtube/video/9wZ0wTqJIxY?t=287
Plastic windows
/youtube/video/9wZ0wTqJIxY?t=382
Orings
/youtube/video/9wZ0wTqJIxY?t=430
Pressure Fill Port
/youtube/video/9wZ0wTqJIxY?t=485
Ignition Wire
/youtube/video/9wZ0wTqJIxY?t=647
Cotton String
/youtube/video/9wZ0wTqJIxY?t=686
Oxygen Cylinder
/youtube/video/9wZ0wTqJIxY?t=728
Adding Oxygen
/youtube/video/9wZ0wTqJIxY?t=746
Burn Time
/youtube/video/9wZ0wTqJIxY?t=941
Measurements
/youtube/video/9wZ0wTqJIxY?t=989
Calibration
/youtube/video/9wZ0wTqJIxY?t=1021
Adding the crucible
/youtube/video/9wZ0wTqJIxY?t=1104
Putting it all together
/youtube/video/9wZ0wTqJIxY?t=1181
Adding water
/youtube/video/9wZ0wTqJIxY?t=1221
Running the experiment
/youtube/video/9wZ0wTqJIxY?t=1249
Soylent
/youtube/video/9wZ0wTqJIxY?t=1340
Fecal Matter
/youtube/video/9wZ0wTqJIxY?t=1421
The Results
/youtube/video/9wZ0wTqJIxY?t=1524