Show solving solar heat problem though the problem ot of utilizing solar heat in place of coal has engaged scientific minds at various times ever since the early part of the seventeenth century it is only within the tha last 15 years that really promising results have been obtained today according to sir mr ackermann the problem Is very mearly solved at least where sunshine 49 plentiful and coal dear where for lex ample coal costs its as much as 17 a iton coal costs a great deal more than that today in italy it already pays to resort to the tha latest methods of using the suns rays in the production of mechanical power the improved plant tested in egypt in 1913 brought results ten times as great as any that had bad been previously obtained the practical side bide of tho the problem Is the tha pro proper p er concentration of solar heat this requires ab reflectors mirrors lenses and other apparatus at once complex and extensive all the necessary apparatus however has been greatly simplified by Ingen ingenious loui engineers and further simplification as said ald to be reasonably certain chicago news |