What is unpolarized light?
A light wave that is vibrating in more than one plane is referred to as unpolarized light. Light emitted by the sun, by a lamp in the classroom, or by a candle flame is unpolarized light. Polarized light waves are light waves in which the vibrations occur in a single plane.
What is intensity and frequency of light?
Answer: Light is electromagnetic radiation and exhbits dual nature, wave and particle. if you consider light is wave, intensity is related to light radiation energy and frequency is the number of waves per second. In particle nature, intensity is related to number of photons in the radiation.
Is intensity equal to brightness?
Intensity is the power per unit area; it is a physical quantity. Brightness involves how the human visual system perceives light, and it is not a physical quantity.
What is light intensity exercise?
Light intensity activities require the least amount of effort, compared to moderate and vigorous activities. Some examples of light physical activities include: walking slowly (i.e. shopping, walking around the office), sitting at your computer, making the bed, eating, preparing food, and washing dishes.
How do I increase the intensity of my push-ups?
Progressively elevate your feet to higher levels to increase the intensity. You may also increase the difficulty, hence your strength, by doing push-ups between chairs with your feet elevated and lowering yourself as far as your can between them.
What type of intensity is sit ups?
Situps are classic abdominal exercises done by lying on your back and lifting your torso. They use your body weight to strengthen and tone the core-stabilizing abdominal muscles. Situps work the rectus abdominis, transverse abdominis, and obliques in addition to your hip flexors, chest, and neck.
How many calories does 50 push-ups burn?
A study by the Journal of Physiology found that exercising before eating makes you less likely to reach for unhealthy foods, and definitely keeps you from grabbing that something extra you don’t need. Add an extra two pushups every week and once you’re up to 50, you’ll burn an extra 100 calories each week.