Bhargo Devasya Dheemahi
Dhiyo yo Nah Prachodayaat.
We meditate upon the auspicious godly light of the Lord Sun; may that heavenly light illumine our thought flow in our intellect.
The Gaayatree mantra is dedicated to the Lord Savitri. Savitri represents Lord Sun. The Sun gives all illumination to the world and any prayer for light should certainly be addressed to "the source of all light" in the material world, the Sun. In the Geetaa the Lord says, the light that pervades, the sun and the moon are all My Light. Thus Savitri, the Lord of Gaayatree, is nothing other than the Light of Consciousness, the Infinite, the Absolute.
This mantra is never chanted for the purposes of material gains, for mercy or pardon, but appeals to the Glorious Power that pervades the Sun and the Three Worlds, to arouse, awaken and strengthen the Intelligence, so that it may lead one through intense sadhana to success.