Primary waves travel through Earthâs crust at an average speed. of about 5 kilometers per second (3 mi/s). Primary waves can travel. through solids, liquids, and gases. As they pass through a material, the. particles of the material are slightly pushed together and pulled apart.
Why This Occurs. Emotional detachment is usually an issue caused by severe, intense anxiety - most notably panic attacks, although any form of severe anxiety can cause emotional detachment. While it's not entirely clear what causes this detachment, it most likely is a coping mechanism for the brain.
Retinal Detachment. A retinal detachment is a very serious condition that can lead to vision loss. Usually a detachment occurs in middle aged people but a sudden blow to the head or jarring movement can also cause the retina to detach. A retinal detachment happens when the retinal layer of cells in the eye separate from the layer called the vitreous. The vitreous provides oxygen and nourishment to the retina and other tissue. In most cases the virtuous only partially separates from the retina. As we age, small tears can form between the two surfaces leading to a complete detachment.