11. The most commercially important of these have the distinction of being impervious to thermal shock . 12. Such high resistance to thermal expansion makes it very resistant to high temperature thermal shock . 13. This normally caused thermal shock to occur within an object, resulting in cracks to the structure. 14. The West Indian manatee has a high casualty rate due to thermal shock from cold temperatures. 15. It has excellent thermal shock characteristics, being able to survive immersion in water while red hot. 16. HOWEVER, thermal shock is going to be much more difficult to control in a big Winchester. 17. Borosilicate glass is desired for its greater strength and thermal shock resistance than ordinary soda lime glass. 18. The fragmentation occurs by the force of the volcanic explosion, or by thermal shock during rapid cooling. 19. Thermal shock caused by heating and cooling can induce failure when power is cycled on and off.20. To avoid such thermal shock faults, cooling rates not exceeding 50 �C / hour have been recommended.