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Physics question eek! and maybe dentists

8 replies

Serena1977 · 04/03/2022 20:29

I've got myself confused!

when we look in a concave part of a spoon (the back bowled bit) our image is upside down so when a dentist looks in the mouth with that concave mirror on a stick, does that mean our teeth are upside down?

Please tell me about concave and convex mirrors!

OP posts:
AndSoFinally · 04/03/2022 20:32

I think it's the other way round? Convex sticks out and concave sticks in?

AndSoFinally · 04/03/2022 20:35

Like this:

Physics question eek! and maybe dentists
RobinHumphries · 04/03/2022 20:35

I use a plane mirror.

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SwissCheeseRentedChildren · 04/03/2022 20:35

Isn’t a dentist’s mirror just flat?

toothgenie · 04/03/2022 20:37

Dental mirrors are flat.

EatSleepReplete · 04/03/2022 20:38

Dead easy to remember OP, the concave side goes inwards, like a cave.

And I always thought a dentist mirror was flat.

user1471530109 · 04/03/2022 20:39

Dentists don't tend to stick spoon shaped mirrors into mouths Grin.

And pp is correct. Concave is the but that goes in.

Choppies · 04/03/2022 20:39

Yeah dental mirrors are flat

Left and right are backwards though hahahaha!

Concave is the one that goes in - like cave or cavity

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