dark ground illumination

ریشه

The word 'dark' comes from Old English 'deorc', meaning 'without light'. 'Ground' refers to the background against which the specimen is illuminated. 'Illumination' comes from Latin 'illuminatio', meaning 'lighting up'.

مثال

• Dark ground illumination is commonly used in the study of transparent specimens.
• The microscope was equipped with dark ground illumination for enhanced visibility.
• The dark ground illumination technique allowed for better observation of small organisms.