▁la ▁France ▁( ID N ). ▁Its ▁he ir ▁is ▁É cole ▁Cent rale ▁de ▁L ille . ▁ ▁Program me . ▁Indust rial ▁series . ▁ ▁First ▁year ▁▁ ▁French , ▁English ▁and ▁German ▁L anguages . ▁ ▁Indust rial ▁Science .- Application ▁of ▁the ▁law ▁of ▁gravity ▁to ▁sol ids , ▁liqu ids , ▁g ases , ▁different ▁scales , ▁p end ul ums , ▁floating ▁bodies , ▁water ▁and ▁spirit ▁levels , ▁hyd ra ul ic ▁press es , ▁p umps , ▁sy ph ons , ▁& c . ▁ ▁He at .- Th erm om eters , ▁conduct ors , ▁good ▁and ▁bad , ▁steam ▁bo ilers , ▁steam ▁engines , ▁& c . ▁▁ ▁Electric ity . ▁- ▁D ifferent ▁batter ies , ▁co ils , ▁electro - mag net ic ▁machines , ▁& c . ▁ ▁Opt ics .- ▁T eles cop es , ▁reflect ors , ▁spect acles , ▁micro scop es , ▁& c . ▁ ▁Phot ography .- ▁Appar atus , ▁manip ulations . ▁ ▁Indust rial ▁Chem istry .- Met als .- ▁Pot ass ium , ▁sod ium , ▁sal ▁am mon iac , ▁l ime , ▁earth s , ▁cl ays , ▁iron , ▁tin , ▁z inc , ▁lead , ▁co pper , ▁mer cur y , ▁silver , ▁gold , ▁plat in um . ▁ ▁Al gebra . ▁- ▁Des cript ive ▁Ge ometry . ▁ ▁Draw ing .- Sk etch es ▁and ▁plans ▁from ▁objects ▁explained ▁during ▁the ▁lect