The optical recording of the object wave formed by the resulting interference pattern of two mutually coherent component light beams. In the holographic process, a coherent beam first is split into two component beams, one of which irradiates the object, the second of which irradiates a recording medium.
Make sure to preheat the oven to the correct temperature (220Â°C / 200Â°C fan oven / gas mark 6) before putting your scones in. The 15 minute guideline starts from the point at which you put your scones in a preheated oven. It may also take a bit longer to bake them through in a standard (non-fan) or gas oven. You will also need to extend the time if youâre baking more than 12 tea-time or 24 canapÃ© scones in the oven at the same time.
1 Bake about 45 minutes. 2  Uncover and bake an additional 15 minutes or more until potatoes are hot. 3  Do not over bake. 4  This method keeps the potato skins firm and crisp. 5  If time is short, place potatoes in microwave and cook on high about 10 minutes. 6  Remove and then place in 350Â°F oven to finish cooking. Store in freezer for up to 3 months. 2  TO COOK FROZEN POTATOES: Preheat oven to 350Â°F. 3  Place potatoes on baking sheet and loosely cover with aluminum foil. 4  Bake about 45 minutes. 5  Uncover and bake an additional 15 minutes or more until potatoes are hot.