Dostupné online Why is lightning coloured? (gas excitations) "Why is lightning coloured? (gas excitations)" «Why is lightning colored? (gas excitations)» Why is lightning coloured? (gas excitations) "Zakaj je osvetlitev barvna? (plinsko vzbujevanje)" "Why is lightning coloured? (gas excitations)" http://webexhibits.org/causesofcolor/4.html "Why is lightning colored? (gas excitations)" http://webexhibits.org/causesofcolor/4.html Why is lightning coloured? (gas excitations)