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Light is energy that can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. (Illustration: NASA/CXC/M.Weiss)

Light is energy that can take on many forms. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light. (Illustration: NASA/CXC/M.Weiss)

Barbell Pullovers ~ Re-Pinned by Crossed Irons Fitness

Barbell Pullovers ~ Re-Pinned by Crossed Irons Fitness

pull-over

pull-over

Black hole? Or wormhole in disguise? | CosmOnline

Black hole? Or wormhole in disguise? | CosmOnline

Tramaine Taylor- MUNDANE (synonym) ordinary ways on how to tie a tie.

Tramaine Taylor- MUNDANE (synonym) ordinary ways on how to tie a tie.

Gun Types

Gun Types

Power +25 Workout

Power +25 Workout

Men's Fashion Lightweight Warm Hoodie Down Jacket 3 Colors 5 Sizes LD8004

Men's Fashion Lightweight Warm Hoodie Down Jacket 3 Colors 5 Sizes LD8004

Great article on pull-ups, useful for beginners (although it calls them chin-ups). Overhand grip is pull-ups ...underhand is chin-ups (where I come from!) lol. One of the best compound exercises for building muscle, strength and mass. Works back, shoulders, biceps and forearms.

Great article on pull-ups, useful for beginners (although it calls them chin-ups). Overhand grip is pull-ups ...underhand is chin-ups (where I come from!) lol. One of the best compound exercises for building muscle, strength and mass. Works back, shoulders, biceps and forearms.

This Funny Comic Gives You A Full Explanation Of Gravitational Waves (By Jorge…

This Funny Comic Gives You A Full Explanation Of Gravitational Waves (By Jorge…