Science Source Feb 2010

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 500 um wide. These feathers have micro-structures that reflect blue light. These micro...

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 500 um wide. These feathers have micro-structures that reflect blue light. These micro...

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 3 mm wide. These feathers have micro-structures that reflect blue light. These microsc...

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 3 mm wide. These feathers have micro-structures that reflect blue light. These microsc...

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 3 mm wide. These feathers have micro-structures that reflect blue light. These microsc...

False color scanning electron microscope image of the tip of a ball point pen. In this image the red ink is in the process of rolling out onto the bal...

SEM of Eastern bluebird (Sialia sialis) feathers. This image is 2 mm wide. These feathers have micro-structures that reflect blue light. These microsc...

False color scanning electron microscope image of a vinyl record. A record is used to store sound. It is produced by a machine with a head which vibra...

False color scanning electron microscope image of a vinyl record. A record is used to store sound. It is produced by a machine with a head which vibra...

Scanning electron microscope image of a vinyl record. A record is used to store sound. It is produced by a machine with a head which vibrates in time...

Scanning electron microscope image of an uncut natural diamond. Diamond is one of the crystal forms of pure carbon and is element 6 on the periodic ta...

False color scanning electron microscope image of an uncut natural diamond. Diamond is one of the crystal forms of pure carbon and is element 6 on the...

Small rounded grains of snow with no original crystal forms evident. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

A Layered and hollow depth hoar crystal with little evidence of bonding. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-S...

Hexagonal snow crystal with broad branches, composed of 2 offset 3-branched snow crystals. Image was obtained using a Low Temperature Scanning Electro...

Grain clusters from the surface layer of a melting snowpack with a large amount of free water evident. Image was obtained using a Low Temperature Scan...

Small hail that has been fractured to show it's internal structure. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Evidence of both rounding and faceted growth exists on the snow crystal pictured here. Image was obtained using a Low Temperature Scanning Electron Mi...

The column forms across a wide range of cloud temperatures and has many variations including the bullet. Image was obtained using a Low Temperature Sc...

Sintering between grains has started with these snow crystals. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

A combination of two crystal forms; one resembling a Japanese Tsuzumi which is an unusual variation. Image was obtained using a Low Temperature Scanni...

Depth hoar crystal (with false color); these crystals occur at the bottom of snowpacks and form when water vapor rises and freezes onto existing snow...

Historical macrophotograph of a snowflake showing characteristic hexagonal symmetry. Each crystal is made up of water molecules, arranged with 2 hydro...

The side plane demonstrated here, is only one example of irregular snow crystals which include broken crystal fragments and abnormal growth features.....

A common snow crystal form; note the double sheet structure. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Rimed hexagonal snow crystal. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

False-color scanning electron micrograph of a snow crystal. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Typical hexagonal snowflake. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Snowflake in the form of an ordinary hexagonal dendrite. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Snowflake in the form of an ordinary hexagonal dendrite. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

The needle snow crystal is often associated with heavy snowfall in the Northeastern United States. Images was obtained using a Low Temperature Scannin...

Snow crystal. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

This wind-packed snow from Alaska's North Slope resembles a 3-D jigsaw puzzle. Image was obtained using a Low Temperature Scanning Electron Microscope...

Grain clusters from the surface layer of a melting snowpack with a lot of free water evident. Image was obtained using a Low Temperature Scanning Elec...

This snow crystal was sampled shortly after deposition on a snowpack. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM)...

Carbon dioxide (CO2) ice/frost on Mars. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Under some atmospheric conditions, forming and descending snow crystals may encounter and pass through atmospheric supercooled cloud droplets. These d...

Under some atmospheric conditions, forming and descending snow crystals may encounter and pass through atmospheric supercooled cloud droplets. These d...

Carbon dioxide (CO2) ice/frost on Mars. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Faceted snow crystal. Image was obtained using a Low Temperature Scanning Electron Microscope (LT-SEM).

Stellar snow crystal.

Layering and a hollow interior characterizes this unusual depthin a hoar crystal. Image was obtained using a Low Temperature Scanning Electron Microsc...

Snow taking a round shape after several days in a snowpack.

SARS lung damage. Light micrograph of a section through tissue from the lung of a patient with SARS (severe acute respiratory syndrome), a fatal pneum...

A SEM of a mouse lung, showing bronchioles, pulmonary veins, and arteries; x50 magnification.

A SEM of a mouse lung, showing bronchioles, pulmonary veins, and arteries; x40 magnification.

A SEM of a mouse lung, showing alveoli; x950 magnification.

A SEM of a mouse lung, showing alveoli; x380 magnification.

A SEM of a mouse lung, showing bronchioles, pulmonary veins, and arteries; x62 magnification.

A SEM of a mouse lung, showing alveoli; x460 magnification.