Other non-price determinants of supply differ from the non-price determinants of demand.   Basically supply is effected by factors that effect the per unit cost of production.  These factors include the price of inputs, the number of firms in the market, and technology.  Each of these factors can cause an increase or decrease in supply.

The price of inputs.  As we learned in the first lecture the supply curve is the marginal cost curve.  The major determinate of the cost of production is the cost of the inputs used to produce the good.  An increase in the cost of inputs causes the price of production to increase.  This means that at the same level of output the cost of production is higher.  This would cause the supply curve to shift to the left or decrease.  You can not produce as much as you did before at the same price.

The number of firms in the market.  The larger the number of firms in the market, the larger the level of supply.  This is because each firm that is in the market is producing some amount of the good.  So if the number of firms in the market increases so does supply (moves to the right).

Technology.  Technology is the knowledge of production techniques, materials, and organization.  An increase in technology lowers the cost of production (although input prices may stay the same) by changing the amount or type of inputs.  Thus an increase in technology would cause the per unit cost of production to fall.  The firm can now produce more goods at the same price, increasing supply.