When does visible light become harmful?

Under some circumstances, visible light can be harmful— for example, when it is presented suddenly, as in a flash or explosion, or when equipment is first turned on. If the intensity is high enough to cause damage in <0.25 second, the body’s natural protective mechanisms will be insufficient.

What are 5 effects of nicotine?

Smoking causes cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD), which includes emphysema and chronic bronchitis. Smoking also increases risk for tuberculosis, certain eye diseases, and problems of the immune system, including rheumatoid arthritis.

What are the negative side effects of nicotine?

Nicotine is a dangerous and highly addictive chemical. It can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries (vessels that carry blood). Nicotine may also contribute to the hardening of the arterial walls, which in turn, may lead to a heart attack.

What are three negative health effects of nicotine?

Nicotine on direct application in humans causes irritation and burning sensation in the mouth and throat, increased salivation, nausea, abdominal pain, vomiting and diarrhea. [17] Gastrointestinal effects are less severe but can occur even after cutaneous and respiratory exposure.

Are there any long term side effects of nicotine?

Some side effects of nicotine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

What are the side effects of smoking cigarettes?

Nicotine Side Effects on Your Brain. Cigarettes are one of the fastest ways to get nicotine into your system. After an inhale, tar with nicotine deposits travels to lungs where it latches on and gets absorbed by the organism. It takes up to twenty seconds for nicotine to travel to the brain.

What are the effects of nicotine in the brain?

Nicotine Side Effects on Your Brain. After an inhale, tar with nicotine deposits travels to lungs where it latches on and gets absorbed by the organism. It takes up to twenty seconds for nicotine to travel to the brain. Other delivery methods, such as chewing tobacco, smokeless tobacco, and e-cigarette systems are slower, but not by much.

What are the side effects of nicotine lozenges?

NICOTINE BITARTRATE LOZENGE: Common (1% to 10%): Dizziness, headache, motor dysfunction Uncommon (0.1% to 1%): Paresthesia, dysgeusia, somnolence Rare (0.01% to 0.1%): Tremor [ Ref] Very common (10% or more): Rhinorrhea/nasal irritation or discomfort (up to 94%)