Would You Like Some Ice for That Burn?

Alex Parry

Abstract


This paper aims to determine how much energy would have to be imparted in one spoken sentence to inflict a third-degree burn on a nearby person. Using an average skin temperature of 33.2oC, the power of normal human speech as 1.25x10-5 W, and the understanding that it is necessary for 60oC water to be in contact with skin for 5s to cause a third-degree burn, it was calculated that 2.32x103 J would be needed to cause this damage to the recipient of the ‘burn’. This would mean 5.88 years of continuous normal speech or five seconds of speech at 172.7 dB.


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References


Oxford Dictionaries (2017) burn, Oxford University Press, [Online]. Available: https://en.oxforddictionaries.com/definition/burn. [Accessed 15 February 2017].

The All Knowing Amy, (2004) burn, Urban Dictionary, 5 May 2004. [Online]. Available: http://www.urbandictionary.com/define.php?term=burn. [Accessed 15 February 2017].

National Health Service England (2015) Burns and scalds, National Health Service England, 16 November 2015. [Online]. Available: http://www.nhs.uk/conditions/Burns-and-scalds/Pages/Introduction.aspx. [Accessed 15 February 2017].

Burn Foundation (2017) Safety Facts on Scald Burns, Burn Foundation, [Online]. Available: http://www.burnfoundation.org/programs/resource.cfm?c=1&a=3. [Accessed 15 February 2017].

Karlsbad, A. & Kopp, S. (1991) Intramuscular and skin surface temperatures of the resting human superficial masseter muscle, Acta Odontologica Scandinavica, vol. 49, no. 4, pp. 225-231.

Foundation for Research on Information Technologies in Society (2017) Tissue Properties - Heat Capacity, [Online]. Available: https://www.itis.ethz.ch/virtual-population/tissue-properties/database/heat-capacity/. [Accessed 15 February 2017].

Liang, X. & Boppart, S.A. (2010) Biomechanical Properties of In Vivo Human Skin From Dynamic Optical Coherence Elastography, Transactions on Biomedical Engineering, vol. 57, no. 4, pp. 953-959.

Crandall, I.B. & MacKenzie, D. (1922) Analysis of the Energy Distribution in Speech, Physical Review Letters, vol. 19, no. 3, pp. 221-232.

Purdue University Chemistry Department (2000) Noise Sources and Their Effects, February 2000. [Online]. Available: https://www.chem.purdue.edu/chemsafety/Training/PPETrain/dblevels.htm. [Accessed 18 February 2017].


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