Why does your reflection on the top side a spoon upside down?
152319
Not to sound like a nerd, but since it is at an angle higher than that of your face, it reflects your light pattern (Your face) in an upside down angle. To make a long story short, its like a fun house mirror. Try tilting it at different angle and maybe you will see yourself right side up!
115470
Please,ask your friend to stand beside the mirror.And to look yourself in the mirror you stand opposite to the mirror.Now look at your friend first,you notice that your friend`s right hand and your left hand are on the side.Rise your left hand, simutaneously  hand at the right side of the image will rise to the same position.Then ask your friend to rise  his  right hand,there is no difference between the side of hand of the image and hand of your friend.But  there is difference between your hand and of the image. This is becuase you are facing opposite to the mirror.That is 180 degree angular difference horizontally  is there between you and the mirror as you and the mirror are facing opposite to one another.once again look your friend, check the vertical difference, that is head & legs of your friend  that are at the same position as of yours.This is because there is no vertical angular difference between you and your friend.Same applies to the mirror.Further ask your friend to turn 180 degree horizontally at the same place. Then your friend also facing opposite to the mirror, same as you are facing.Notice that there is no remarkable change in the  position of your heads and the top of the mirror.
863293
In the opposite direction of the applied force or motion
18257
you were correct.  It appears that the howstuffworks diagram showing the bicycle mentioned in another answer is in error in that the bicycle would be upside down as shown but the tires and handlebars should not be reversed the way shown.  For example if you are looking at a nearby shrub and a distant tree, both would be upsidedown on your retina.  But the order of objects would be tree, shrub, focal point of eye, shrub image then tree image.\n\nAn experiment was conducted where people wore special glasses that inverted objects as the eye does.  After a while they learned to see correctly again and when they took the glasses off everything was inverted until they re-learned to see correctly once again.
512675
The spoons position (also spoon position, spooning) is a popular sexual position and intimate cuddling technique. The name derives from the way that two spoons may be positioned side by side, with their bowls aligned.\n\nSexual spoons position\nIn the sexual spoons position, the man lies on his side, with his knees bent while the woman lies on her side, with her back pressed against his front, her legs slightly parted, her hips tilted to one side, and her knees bent. They line up to align his penis with her vagina, and his penis is then guided into her vagina from the rear. It is also possible to use this position for anal sex rather than vaginal sex.\n\nThis position allows for a great deal of physical intimacy, as the full-body contact allows both partners to cuddle and caress one another. The man can provide the woman with clitoral stimulation by hand while engaging in vaginal penetration in this position (or, in the case of anal penetration in this position, the penetrating partner can masturbate the penetrated partner). Low-intensity sex can go on for a long time in this position. However, the lower intensity from this position may not be desired by both parties; furthermore, penetration is quite shallow, and clitoral pressure is not very intense without manual stimulation. In addition, there is little visual stimulation for either party, as they are not facing one another and cannot see each other's bodies clearly.\n\nA modification of this is for the man to place his uppermost leg over the belly of the woman, who may then lie somewhat more on her back, with the knees of both legs drawn up. The man's lower leg is extended under the inverted "V" of those legs, with penetration from beneath those legs. This can be a very comfortable position for both partners and is useful as a resting position between more energetic episodes.\n\n\nNon-penetrative spooning (cuddling technique)\nIt is also vastly popular to use this position (without penetration) simply for cuddling, as it provides close contact and shared body heat. The term spooning usually refers to this activity.
745196
What you are describing is a result of light reflecting off a concave surface.  The best way to explain this is like this:\n\nDraw a big T on a piece of paper.\nNow draw a line from the lower right side to the vertex of the T (that's the intersect).  This represents light coming in.\nNow draw another line from the vertex to a point at the same location as the origin of the other line, but on the lower left.  That is the light leaving.  The angles of both lines converging on the crossing of the T should be the same.  Same with any beam of light.  It is reflected at the same angle as it is received.\n\nA spoon is a reflecting concave mirror.  If you could get close enough to the spoon you could see your image right side up.  But when you are further out than the focal distance the image inverts because the beams cross over each other.
563617
Mirrors don't actually reverse anything.  When you face someone or something, they have to turn around so that you can see them.  A mirror doesn't have this limitation.  You can see something without turning around to do it.  Of course, this is backwards from what you usually see.  In order to see the front of something, you could turn it around vertically instead of horizontally.  In that case, you could maintain left and right, but you would be confused up and down.
192182
It's because left and right are relative terms, while up and down refer more to absolutes.  If were facing east looking into a mirror, our right hand would be south, and our left hand north.  Referred to north and south, there is no inversion--move your "north hand" and the image's "north hand" moves; move your south hand and the images south hand moves.  The problem is that left/right is a special sort of orientation that is centered from ourselves and distinguishes from two symmetrical sides of ourselves.  You right hand looks like the reflection of you left hand, but when you look at the reflection of your left hand, that reflect is still on *your* left.  If you imagine that the image reflected is some different person, and you try to set up a left/right orientation with resepct to the person in the mirror, it will be backwards--but that's only because it is erroneous to think that the reflection of your right hand is your reflection's left hand.  It isn't; it just looks like a left hand because our bodies display left/right symmetry.  If your head looked like the mirror image of your feet, you might make the same mistake, but the body does not display any manner of top/bottom symmetry.
959091
Because the curvature of the glass will falsify your measurement (light diffraction, bending of a flexible measuring tape). You have to measure edge to edge on the concave side to avoid this.
32567
Are to talking about the little line that's raised a little (if so there should be one on the 'J' key too)?  If you are, it's so you can feel whether or not your fingers are in the right place.  It reduces the need to look at the keyboad while typing (and I image would be extremely useful for blind people).  Incidently, on old Apple keyboards, there is a circular bump on 'D' and 'K' rather than a horizontal line bump on 'F' and 'J,' but at some point a few years back they changed it to match Microsoft keyboards so it would be easier to swtich back and forth between the two (if you can find an old Apple keyboard, try typing on it - it feels weirder than you might expect).
1031319
an brass insignia of a wooden spoon...............J/k I really dont know but it would be easy to find out!
382993
The butter affect the slice of bread's CG (Centre of Gravity) by lowering it, hence, it topples butter-side down.\n\nSame principle (lowering of CG) is used in formula 1 cars and double decker buses. Prevents overturning because the point of CG is less likely to exceed the base of the object.\n\nYou can apply this same principle humourously e.g. how heavy and how large can a ladies' boobs get before she keels forward every time she stands up. =P *wink
282836
First realize that since the beam is passing through something, reflection has nothing to do with it.  The only possible answer is the one that mentions refraction.
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.
608906
may be with internal reflection
4941
It doesn't invert left and right.\n\nThat's why your mirror image appears to be using its left hand when you do something with your right hand -  if you saw a real person, his left hand would be there. If you could step out of your body and move to where the mirror image stands, your right hand would appear to be to the left of that point of view, because you would have turned around by 180°.
808563
because of diffraction.... and that light is not unidirectional and incoherent.....\n\nwhen light waves bend around an edge the waves interfere with each other and forms diffraction patterns... but these patterns can not be closely seen... not clear... or not as edgy as the obstacle like your hand or post...\n\nin this case, the edge of your hand and the edge of the post are edges, so when they are close, the 'kissing' of the shadows is the part of the pattern where light waves don't exactly meet the way they should...