The Huygens<span>-Fresnel </span>principle<span> states that every point on a wavefront is a source of wavelets. These wavelets spread out in the forward direction, at the same speed as the source wave. The new wavefront is a line tangent to all of the wavelets. </span>
Newtons first law of motion states that an object will remain resting or in uniform motion in a straight line unless acted upon by an external force. It may be seen as a statement; that objects will remain in their state of motion unless a force acts to change the motion.
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Answer:
receptors
Explanation:
In this case, your skin and brain act as receptors in maintaining homeostasis. These receptors are monitors in different parts of an organism's body that are there to detect specific changes that occur and activate very specific responses in order to counteract these changes and maintain a very stable system. This is exactly, what your skin and brain are doing in this scenario, they detect the change in temperature and counteract its effects through sweat which ultimately causes the opposite effect and maintains equilibrium in your body.
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