would like to know about the safety of quartz infrared heaters. Particularly for an elderly person. She claims that back in the old days she heard that quartz is not good for you. Please comment on quartz and infrared heaters in general and their safety for an older person. I am looking at an expensive one which claims that the cabinet which houses the heating element stays cool. Thank you. What are the negative side effects of quartz?
Quartz is a stable so gas rules are beside the point. Volumetric coefficient of thermal growth is a million.77 x 10^(-6) according to degree C (at 20C) Delta V/ V = ok x Delta T V= 4/3*Pi*7^3=1436.seventy six cm^3 for that reason, Delta V / 1436.seventy six = a million.77 x 10^(-6) x (220-50) Delta V = 0.40 3 cm^3 observe - the value for ok is that at 20C, so some errors will prepare.
sphere vol = 4/3 phi r^3 change in vol = 4/3 phi 16^3 * (180 - 20) * 1 x 10^-6 = 2.745 cm^3 ---answer
i'll solve this one just for you <3 v = v? + βv?ΔT v = v?(1 + βΔT) note: v? = 4/3*π*r? let's solve for v, w/c is the final volume of the quartz sphere v = 4/3*π*r? * [1 + βΔT] v = 4/3*π*(8)? * [1 + 1x 10??(180 - 20)] v ≈ 2,145.004 cm? then let's solve for v? v? = 4/3*π*r? v? = 4/3*π*(8)? v? ≈ 2,144.661 cm? fianll, we can now solve for the change in volume, w/c is ΔV ΔV = v - v? ΔV = 2,145.004 cm? - 2,144.661 cm? ΔV = 0.343 cm? => answer!
