Pitch waa magac loogu talagalay mid ka mid ah tiro badan oo ah polymers. Pitch wuxuu noqon karaa mid dabiici ah ama la soo saaro, laga soo saaro batroolka, dhuxusha ama dhirta. Noocyo kala duwan ayaa sidoo kale laga yaabaa in lagu magacaabo tar, bitumen ama asfalt. Pitch oo laga soo saaro dhirta ayaa sidoo kale loo yaqaan reinhin. Qaar ka mid ah alaabooyinka laga sameeyay reiniinta dhirta ayaa sidoo kale loo yaqaanaa rosin. Pitch waxaa si caadi ah loo adeegsaday si uu u caawiyo xajka dhererka maraakiibta qulqulka leh (eeg sanduuqa dhismaha). Pitch waxaa sidoo kale loo isticmaali karaa weelasha alwaaxda biyaha lagu dhejiyo iyo samaynta shuclada. Shidaalka batroolku waa madow midabkiisu, ka dibna weedha ciriiriga ah, "qaylo madow". Oil​—How Do We Get It? Liska Salidka Mawduucyada Genel Energy Tarka