Framed Pictures, Canvas Prints
Posters & Jigsaws since 2004
Home > Science > SEM

SEM Gallery

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 4087 pictures in our SEM collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.

Featured SEM Print

Spider mite, SEM

Spider mite. Coloured scanning electron micrograph (SEM) of a spider mite (Tetranychus sp.). It is an economic pest and plant parasite, found on vegetable crops, fruit trees and flowers. It feeds on the leaf sap, which causes leaves to mottle, turn yellow and fall off. The spider mite is named due to its ability to spin a web, which it does across a leaf surface that secures and protects it against predators. Their numbers can be controlled with organophosphorus pesticide, although some resistance has developed. Another method is biological control, using a natural predator, such as gall midge larva (Feltiella acarisuga). Magnification: x135 at 6x7cm size


Featured SEM Print

Human egg cell and sperm cells, ESEM

Human egg cell and sperm cells, coloured ESEM(environmental scanning electron micrograph).There are three sperm cells (brown) attempting tofertilise the egg cell (ovum, blue). Once one ofthe sperm cells has fertilised the egg cell, rapidchemical changes make the outer layer ( zona pellucida ) of the egg cell thicken, preventing anyof the other sperm cells entering it. The head ofthe successful sperm cell releases geneticmaterial that mixes with the genetic materialin the egg cell. The resulting zygote then has thefull set of genes required to develop into a newhuman. The sperm cell ( spermatozoon, male) and theegg cell ( ovum, female) are the human gametes (reproductive cells). Magnification: x680 whenprinted 10cm wide

© Thierry Berrod, Mona Lisa Production/Science Photo Library

Featured SEM Print

Aster seed, SEM

Aster seed. Coloured scanning electron micrograph (SEM) of a seed from an aster flower (Aster sp.). The structures seen here are the cypsela (lower frame) and a large pappus (upper frame). The pappus aids in wind dispersal. The cypsela is a type of achene, a specialised dry fruit, and the actual seed is inside the cypsela. A seed contains an embryo (a fertilised ovule from which a new plant can grow), and a supply of food. Seed dispersal methods include being carried by the wind, or water or on animal coats, or being eaten and deposited in animal droppings. Aster flowers are mostly native to Eurasia, and are a popular garden plant. Magnification: x420 when printed 10 centimetres tall

© Steve Gschmeissner/Science Photo Library