More ideas from Bill
Tecnica para calcular las horas de luz restantes con la mano | De Rutas Por La Naturaleza

This is a great way to tell time if you don't have a watch with you!

Brain-Waves

Binaural beats are not heard, but perceived as an auditory beat when two tones of specific sound wave frequencies are directed to the right and the left ear, respectively. We will try to find out whether binaural beats can induce lucid dreaming or not.

Infographic on neurotransmitters in the brain. Neuroscience. Brain. Infographics. Science. Neurons.

A great Infographic on neurotransmitters in the brain. Neurotransmitters are so important for brain function and happiness!

Classification of vasculitis  General symptoms: Fever Skin: Palpable purpura, livedo reticularis. Muscles& joints: Myalgia or myositis, arthralgia or arthritis.Nervoussystem:Mononeuritis,multiplex,headache,  stroke, tinnitus, reduced visual acuity, acute visual loss.Heart and arteries: Myocardial infarction, hypertension, gangrene.Respiratory tract: Nose bleeds, bloody cough.GI tract: Abdominal pain, bloody stool, perforations.Kidneys: Glomerulonephritis.

“ANCA Associated Vasculitis: Pathogenesis (From Comprehensive Clinical Nephrology, Ed)”