World Changes Due to the Telephone. Within 50 years of its invention, the telephone had become an indispensable tool in the United States. In the late 19th century, people raved about the telephone's positive aspects and ranted about what they anticipated would be negatives.
When you hold the ice cube for a very long time, the enzymes deactivate. Blood circulation stops. The brain initiates impulses for blood circulation. The local nerves therefore get irritated and produce a sensation of heat.
âBut for people with migraine, an ice cream headache can lead to a migraine attack.. Any cold food, such as an iced drink or a slushy, can cause an ice cream headache, also known as brain freeze. Extremely cold food stimulates nerves in the top of your mouth that causes your blood vessels to constrict.