First, smokers often have a morning cough which can be light brown to dusky brown. If this is the situation, stopping smoking is the only remedy.
Second, if a person has a sinus infection, the mucous may be from the throat rather than the lungs. The mucous in an infection may be brownish (smokers), yellowish or greenish (infection), with or without blood streaks.
Third, if a person has a lung infection like bronchitis or pneumonia it can also be those yellow, green, with or without blood streaks.
If mucous is yellow or green, or is blood streaked, you need to see a doctor. Most often it is a treatable infection and most often the blood is due to small blood vessels breaking during hard coughing. However, coughing up blood can be serious so it should always be checked.
Also, if this is occurring every day, let your doctor know. Sometimes a simple decongestant or sinus medication can dry sinsus secretions. *Be cautious, however, because using too much sinus meds without a doctor's input can dry the nose and throat so much that, again, small blood vessels can bleed during coughing.
light yellow
It depends on the context. In terms of wavelength, green light typically has a higher frequency than yellow light because it has a shorter wavelength. However, in everyday life, yellow light is more commonly observed and used in various lighting sources, so it may have a higher frequency of occurrence.
Phlegm is a sticky material from your mucous membranes in your repiratory system. When you have a cold it might be yellowish brown. If there's an infection, it might be greenish brown. Normal phlegm is usually clear.I presume you mean: "Phlegm"?Phlegm is a liquid secreted by the mucous membranes.The definition is limited to the mucus produced by the respiratory system and particularly that which is expelled by coughing("Sputum"). Phlegm in essence is a water based gel consisting of numerous immuno-type substances. Its composition varies depending on a number of factors, such as climate & level of health etc. Its colour can vary from clear to pale or dark yellow & green, from light to dark brown.Basically, it is a vehicle through which the body attempts to flush out foreign invaders from the respiratory system.'phlegm' is an English word, meaning spit, saliva.It is also used to indicate 'unexcitability, steadiness, boringness', and is used in the adjective 'phlegmatic', meaning 'unexcitable, steady, boring'
Blue light has a higher frequency compared to yellow light.
yellow and white. light green and yellow orange yellow and white
really light yellow
Red and green light. Yellow glass transmits yellow light. Yellow light is a combination of red and green light. Therefore yellow glass transmits red and green light and absorbs blue light.
No, yellow paper does not absorb red light. Yellow paper absorbs blue light and reflects yellow light, giving it its yellow appearance. Red light is not absorbed by yellow paper, so it is reflected or transmitted through the paper.
Compared to yellow light orange light has a longer wavelength.
I don't know who told you that, but you don't have to light a candle everyday. I have a good amount of candles in my house and I don't need to light them all the time. Rather new or old they will always stay or smell the same way if you light them everyday or not everyday.
Yellow reflects light. It appears yellow because it reflects light in the yellow range of the spectrum and absorbs or subtracts other colors.
A yellow pencil appears yellow because it reflects yellow light waves while absorbing other colors. The pigment or dye used to color the pencil is designed to selectively reflect yellow light, giving it its yellow appearance.