Examlex
Explain how mass and compactness (that is, size and density) would affect the way an object distorts the fabric of spacetime.
Threshold
The minimum level of stimulus intensity required for a stimulus to be detected or for a response to occur.
Endorphins
Neurotransmitters produced in the brain that act as natural painkillers and also improve mood, often released in response to stress or exercise.
Norepinephrine
A neurotransmitter and hormone involved in arousal, alertness, and the regulation of blood pressure.
Dopamine
A neurotransmitter involved in many functions, including motivation, reward, reinforcement, and motor control.
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