why does a spoon give an upside-down reflection when you look in it?
478046
Only on the concave(front) curve of the spoon will give an upside down reflection.  The distorted surface of the spoon reflects light from yourself at angles which result in an inverse image in the spoon.  This is actually called refraction.
885973
EE/EB/HI  upside down on a calculator display.
68415
it's not reversed.  take your hand and press it up to the mirror.  see how your fingers line up exactly with the fingers in the mirror?  take both hands and press them up to the mirror.  now your right hand lines up with the mirror hand that is on your right, and your left hand lines up with the mirror hand that is on your left.\n\nall kosher, right?  nothing's reversed.\n\nthe point is that "right" and "left" are relative directions and mean different things depending on whether you are looking at someone from the front or the back.
363353
It's probably the water causing refraction of the scope.  You'll see that at higher magnifications.  I think it's the same principle as a snowflake.
1071354
sorry I am with Marianne.\nI could answer if it was in relationship to altering the volume of liquids in gravy. That would be when my spoon can stand up in it.\nnot a science person.
421431
Well if you are talkin about a mirror made of floated glass a layman can c the quality of it other wise ind. know how is required i think (i am not proffesional in it, just being in a float glass plant for a week). If it is a mirror and you c a distracted reflection then b sure that there is impurity in the glass, as well as the transparency of float glass is supposed to be very high compares to the conventional one.
85393
The heated air coming off the ground bends the light coming through it so that what you see appears to move or look like reflections in water. It has nothing to do with cones and rods other than that they are what you use to see all the time.
548003
What you see in a mirror depends on how the light bounces off the mirror and into your eyes. When light hits a mirror, it bounces off in the same way that a ball would bounce off the mirror. If you threw a ball straight at a flat mirror, it would bounce straight back. If the mirror was curved so that the ball struck the surface at an angle, it would bounce away at an angle. \n\nWhen you look into an ordinary flat mirror, the image of your face is right side up: Your hair is on top of your head and your chin is underneath. To reach your eyes, the light from your hair hits the mirror at a slight angle and then bounces into your eyes from above - which is why you see your hair on top and your image as right side up. \n\nAs everyone knows, a flat mirror reverses your right side and your left side. How does it do that? Suppose you are standing face to face with another person. If your right ear points toward the east, his or her left ear will point toward the east. Now, instead of facing another person, suppose you are facing a flat mirror with your right ear pointing to the east. The light from your right ear will bounce off the flat mirror and enter your eyes from the east. Even though your east ear is the east ear of the image, your right ear has become the left ear of the image! (Yes, this is a little mind-boggling at first reading. But once you get it, it will seem simple.)
1126649
Yes, everything's upside down from down under!\n\nIf you're facing south looking at an early crescent setting in the northern hemisphere, the Moon is on your right, and the Sun is further to the right (west), so the right (west) side of the Moon is illuminated.  From the southern hemisphere, you're facing north, and west is on your left.  The western side of the Moon is still illuminated, but now you see it on the left. The Moon, of course, appears upside down.
331219
First of all, its not a "neeple". Its a NIPPLE. The nipple is the brown raised area from the breast, the "tip" of the breast.  An inverted nipple is when the nipple is not actually exposed. Its pushed inward.
329439
Ha!  I know just what you mean.  Basically a reflective surface reflects everything and most everything is visible depending on your position in relation to the object.  For example, an object held behind your back can be seen by a person standing in front of you if they change their position slightly.  It is a fascinating and wonderful phenomenon.
474081
No....I put down my spoon a long, long time ago.\n\n\n(He/She who carries the spoon is trying to "stir things up".)   LOL
1076289
there is a curve in the surface of the liquid, (known as the meniscus) sometimes positive, sometimes negative,  which is best seen at eye level, to compare it with the mark on the graduated cylinder.  The center of this meniscus should be even with the mark.
730887
I have a pair of those interesting deep-dish-shaped double-domed parabolic mirrors from Edmund Scientific, the top one sits upside-down on the bottom one, and the top one has a hole in it.  So when you put something inside it, and move away at an angle, an image of the object appears to be sitting above the top dish.  I ask people, "Hand me that little pink pig sitting on that dish".  They see it, reach for it, pick up nothing, reach for it again, and see their fingers apparently pass right through a solid object.\n\nWhat is the reality there?  My eyes tell me there's a little pink plastic pig sitting on the top of that dish.  Yet when I try to pick it up, my fingers pass right through it.  But then I distort the mirrors a little, and the pig blurs in an odd way that lets me see that he's actually a reflected image from inside the unit.  And if I understand optics sufficiently, I understand that it is possible, with certain arrangments of parabolic mirrors, to erect "real" images (versus the more common "virtual" images that we see in most mirrors and lens) of objects, and even design and build versions of my own, with the effects and capabilities fully determinable in advance.  That's reality.\n\nReality does exist.  Granted, we have a limited and distorted view of it due to the limitations of our senses, but it does exist.  For example, this desk in front of me seems like a solid object.  But in truth, my view of it is limited by the fact that my eyes are not able to resolve the electrons orbiting the nuclei that make up the desk, and that the vast majority of this desk is vacuum, therefore the fact that, when I touch this supposedly-solid desk, what's actually happening is that the electrostatic field generated by the electrons of the desk are exerting a force against the electrostatic field of the electrons orbiting the nuclei of the atoms making up my fingers.  There are no "solids" touching anything, just fields pushing against each other the way 2 magnets can push against each other.\n\nTo me it looks like reality begins immediately outside your eyes.  All is reality.  The only place it ends is inside your head, when you misinterpret what your limited senses tell you.
817033
The spoon trick works, but really hurts....\nCheck wiki-how... they have quite a few suggestions:)
1075466
This phenomenon is call total internal reflection.\nThe theory explaining the phenomenon is detailed in most good physics optics textbooks.
608906
may be with internal reflection