PJ Challenge 1 – Answer this Question

Ek Baar Nithin, Majestic se Ghar jaane ke liye auto liya. It was around 7 PM night and his house is near MarthaHalli. Auto wale ko patha chala ki Nithin ko route nahi patha aur usne poora city ghumaake 9:30 PM Ghar Pahunchaya. Meter mein bahot paisa aaya tha aur uske Upar Auto Wale ne Double meter charge bhi maanga. Bichara Nithin, Poora paisa Auto waale ko de diya Aur apne room ki aur chala. Suddently Power Went off and it was very dark there. But Nithin could see everything clearly. He opened his door and went inside the room. There was no electricity, still he could see everythig very clearly...

How could Nithin see everything so clearly, even though it was very dark?

Cheers,
Vivek