The Camera
What do converging lenses produce?
inverted, real images
Is a movie projector similar to a camera?
No it is the opposite of a camera
What type of lens is used in a magnifying glass?
A converging lens
What was the less improved version of the compound microscope?
The simple microscope
What is the difference between a compound microscope and a refracting telescope?
The object is much farther away in a refracting telescope
Where must the object be located in a camera?
at more than twice the focal length of the lens
What type of image does a movie projector produce?
A large, upside down, real image
Where is the object located in a magnifying glass?
Between F' and the lens
How many lenses are present in a compound miroscope?
2 converging lenses
What similarity do compound microscopes and refracting telescopes have?
They produce 2 large, upside down images:one real image that cannot be seen and one virtual image that can be seen
Who invented the flexible roll film and when?
George Eastman in 1884
Where must the film be located in a movie projector?
Between F' and 2F'
What type of image does out brains produce, while using a magnifying glass?
A bigger, virtual image located on the same side of the lens as the object
What type of images are formed in a compound microscope?
Two bigger, upside down images; one real and one virtual
Instead of film, what does a digital camera use?
a light sensitive device made of silicon called a charge coupled device
Where are the movies shown by digital cinemas stored?
DVD's or hard drives
The lenses had very short focal lengths, causing strain to the eyes
Why can't you see the image in a compound microscope?
because it is between the objective and the eyepiece lenses
How do you create a sharp image on a camera?
by moving the lens in and out
Since the image is upside down, what way must the film be loaded into the projector?
Upside down so that the movie on the screen would be upright
Who made observations using simple microscopes?
Antonie van Leeuwenhoek
what lens is the real image formed by and what lens is the virtual image formed by?
The real image is formed by the objective lens and the virtual image is formed by the eyepiece lens.