To make sure that the batteries come into contact with the plate that holds the bulb.
In the bottom.
The spring in a flashlight completes the circuit by providing a connection between the battery and the light bulb. It does not convert electrical energy into light energy - the light bulb does that function.
There is more force applied to the top of the spring than the bottom, because the whole spring is hanging from the top, but only a small part is hanging from near the bottom. The larger force stretches the spring more.
Hag fish
The inside of a flashlight usually contains a light bulb or LED, a reflector to direct the light forward, and batteries to power the light source. There may also be a switch mechanism to turn the flashlight on and off.
No
There is a lens, cup, LED emitter or lamp, button tube, tail, spring, battery, and switch.
The first wind-up flashlight was invented in the late 1890s by an inventor named David Misell. The flashlight used a combination of a spring mechanism and gears to generate power through manual winding, eliminating the need for batteries.
If you are using iOS 7/8 then you go to the bottom of the screen and slide up. This should pull up icons. You need to select the flashlight icon to turn it on or off.
if you think I'm going to tell you this answer your wrong get your bottom up and use your book to find the answer
Box Spring
To assemble a full electric hospital bed, latch together the foot-spring and head-spring sections. Then hook the bottom head-spring center mounting latch to the bottom foot-spring center mounting rivet.