What kind of picture is this and how can i make my own?

heres a link, whats the name of it,for example to find a walpaper i would search... heres a link a href="http://www.google.com/imgres?imgurl=http://gnome-look.org/CONTENT/content-files/94090-circle_test.jpg&imgrefurl=http://facebookskin.com/abstract/circle/&usg=__CSaMMiAkie-66144kSQPF9e5e1Y=&h=1024&w=1280&sz=206&hl=en&start=83&sig2=kgyXaeZqIkabIMYjLQ0OYQ&zoom=0&tbnid=gzPXI9372epRAM:&tbnh=116&tbnw=150&ei=tPCXTcygBY7ksQPc1enABQ&prev=/search%3Fq%3Dcircle%2Bwallpaper%26um%3D1%26hl%3Den%26sa%3DX%26biw%3D1190%26bih%3D850%26tbm%3Disch0%2C2396&um=1&itbs=1&iact=rc&dur=336&oei=gvCXTZSMOYaisAOp3YS-BQ&page=4&ndsp=30&ved=1t:429,r:25,s:83&tx=101&ty=98&biw=1190&bih=850" rel="nofollow"http://www.google.com/imgres?imgurl=http…/a