In physics, a photon is a bundle of electromagnetic energy. It is the basic unit that makes up all light. The photon is sometimes referred to as a quantum of electromagnetic energy. Photons are not thought to be made up of smaller particles. They are a basic unit of nature called an elementary particle. Properties of a Photon. Photons have some basic properties that help define what they are and how they behave.
Rad 270 Paranasal Sinuses. The maxillary sinus is aerated at birth. The other sinuses begin to aerate at 6 y/o. Aeration is completed by age 18. Chronic sinusitis T1 weighted normal sinus w&w/o gadolinium Polyps Multidetector CT scans of paranasal sinus in a patient with deviation of nasal septum. Brem M H et al.
Serous otitis media, a condition where the eustachian tubes are blocked by mucus, could also point to sinus infection. Depending on which of the sinuses are affected, the symptoms of the sinus infection may differ. Maxillary sinus infection has a close link with sinus infection tooth pain. This is due to the close proximity of the upper teeth with this sinus cavity. If the cause of teeth pain is not the result of tooth decay after consulting a dental surgeon, then the most likely cause is sinus infection.