All named damages appear under ideal conditions as more or less accurate circles. Conditions, at least partially similar as an ideal, is possible to try and only rarely achieve, for example in the laboratory.
Zote aitwaye Onekana uharibifu chini ya hali bora na na duru zaidi au chini ya sahihi. Masharti, angalau nusu Sawa kama bora, ni Inawezekana tu kujaribu na kufikia Mara chache, kwa mfano katika maabara.