Industrial

Birds

The Lesser Goldfinch (Spinus psaltria)

Identification The lesser goldfinch (Spinus psaltria) is a very small songbird of the United States. The bird has a crown, nape, back, and upper tail covert uniform greenish-grey to olive...
Nature

Photographer Silhouetted Selfies in Spectacular Landscapes

The photographer prepares his camera on its tripod. He sets the timer and quickly runs into the shot...
Birds

Eurasian Wryneck ‘Jynx torquilla’

IDENTIFICATION Eurasian Wryneck is 16–17 cm in length and 25–27 cm with wingspan. This small, aberrant woodpecker is a...
Herbs

The Best Planning and Planting a Herbs Garden

Every good herbs garden design book advises a designer gardener to first take your squared paper and in...
Africa

The Incredible Hydrothermal Fields of Ethiopia

The hydrothermal fields of Ethiopia look like landscapes of an alien plant. The amazing photographs of the Dallol...

The Power of Separation: Understanding the Centrifuge Machine

Business Tauheed Ahmad Nawaz Tauheed Ahmad Nawaz -
Centrifuge Machine A typical centrifuge machine consists of a motor, a rotating assembly (also known as a rotor), and a control system. The motor provides...