Magnification is ___ ____ _____ ______ an object appears
How many times bigger
As the magnification increases the field of view _________
Decreases
Contrast is?
The difference between light and dark areas ex: high=Bright medium=both low=Dark
The amount of detail that can be seen in an image is __________
Resolution
A simple microscope is ___ ____
One lens
A simple light microscope can see up to
__x
25x
What’s a microscope that uses multiple lenses and can have a magnification up to 2000x?
Compound light microscope
Electron microscopes...?
Shine light on/through an object
Scanning electron microscope sweeps _____ across the _____ _______ of an object
Beams
outer surface
What’s a microscope that can see up to 500,000x and only views things in 2d?
Scanning electron microscope
A scanning electron microscope views live subjects or dead subjects?
Dead subjects
Transmission electron microscope...?
Transmits electrons through a slice of a sample
What’s a microscope that views subjects up to 10,000,000x and views in 2d?
Transmission electron microscope
Confocal laser scanning microscope...?
Uses lasers to view multiple 2d slices and turn it into a 3D object
When thinking of a confocal laser scanning microscope think of _____ ____
Bread loaf
A ________ _____ ________ __________ Uses computer software to create a 3d object out of multiple slices
Confocal laser scanning microscope
A scanning tunnelling microscope views subjects in __ and is the _______ ______ microscope available
3D
highest detail
Scanning tunnelling microscope...?
Uses a fine electron needle near the surface of an object
A scanning tunnelling microscope can see in detail as small as ______
0.1 nm
a scanning tunnelling microscope can see _________ ______ and the structure of ___.
Individual atoms
DNA
ultrasound...?
Uses a speaker to vibrate to create an ultrasonic signal. The delay between the sound waves is turned into an image using a computer
An ultrasounds speaker vibrates more than ______ times per second
20,000
Magnetic resonance imaging(MRI)...?
The patient inserts a hollow tube containing a powerful magnetic field.
How does an MRI create an image?
It re-orients the protons found in the water molecules in the patients body. When the field is turned off different tissues return to normal an different rates.
Computerized tomography(CT or CAT scans)...?
Combines multiple x-ray image slices just like a CLSM microscope
Which provides more information. An CT scan or an X-ray?