or both, or neither?1free of chromatic aberration2has more severe spherical aberration3requires aluminum 4can be used for photography5Can be made in larger sizes6has a prime focus at which a person could work without blocking the incoming light7used to observe gamma rays
Don't know what a turtle style is, but about the edges: there's nothing you can do about it, as in order to have the brownies moist in the middle, the edges must dry outBut try this, it can help a little: before putting it in the oven, cut stripes of baking paper and cover the sides you don't want to have dried upAlso, you can put a bowl of water in the oven together with the brownies, the steam will help it.
I have no idea what turtle style is but when I make caramel brownies I add a layer of chopped jersey caramels to the pan after pouring half the batter on As for stopping the edges from going hard, perhaps make sure you take it out as soon as it is doneHave you tested your oven with a thermometer to make sure it is at the right temperature? Sometimes the oven will be out quite a bit to what the dial says and it makes a difference in how your baking turns out.
1) Reflectors are free of chromatic aberrationModern apochromatic refractors come really close though2) Neither, I thinkSpherical aberration depends on the exact mirror or lens shapes3) NeitherReflectors usually use aluminium-coated glass, but older ones used silver-coated glass and the first ones used polished metal4) Both5) ReflectorsThe aperture limit for a refractor is about a metre because the lens can only be supported round the edge6) All refractors and a few off axis reflectors, but not common Newtonian or Cassegrainian reflectors7) NeitherX-rays can be reflected, but gamma rays are too high energy.
I like to add stuff to brownies too, I like to add butterscotch chips, or peanut butter chips, they have raspberry chocolate chips and white chocolate also, maybe butterscotch and white chocolate would be good, plus it is super easy.
