पृथ्वी के वायुमंडल की बाहरी सीमा पर किरणों के लंबवत सतह पर प्रति इकाई क्षेत्र में प्राप्त सौर विकिरण को क्या कहा जाता है?

What percentage of total solar radiation incident on top of the atmosphere is accounted for by visible radiation?

The rate at which solar energy arrives at the top of the earth's atmosphere per unit area is called the:

The total solar radiation received at any point on the earth's surface is the sum of direct and diffuse radiation, and is referred to as: