Email. Print. Trigeminal neuralgia (tic douloureux) is a disorder of a nerve at the side of the head, called the trigeminal nerve. This condition causes intense, stabbing or electric shock-like pain in the lips, eyes, nose, scalp, forehead and jaw.Although trigeminal neuralgia is not fatal, it is extremely painful.auses and Risk Factors. The pain of trigeminal neuralgia is usually caused by pressure on the trigeminal nerve at the base of the brain. The pressure can be result from: 1  A stroke that affects the lower part of the brain, where the trigeminal nerve enters. 2  A tumor that pushes on the nerve.
The Planck mission, launched on May 14, 2009, is measuring the Cosmic Microwave Background (CMB) over a broad range of far-infrared wavelengths, and to an unprecedented accuracy. The measurements will enable the extraction of essentially all of the information that can be obtained from CMB temperature anisotropies. Planck is expected to provide answers to many fundamental questions about the early history and evolution of our universe. Specifically, it is giving scientists the data needed to: set tight constraints on cosmological parameters
It has been designed to be robust enough to withstand the 'shake-and-bake' stresses of launch, and the temperature difference between launch, when it is at an ambient temperature of about 300 K, and operation, at about 40 K. The Planck telescope up close. Seen in the microwave range, the CMB is only 1% as luminous as Earth, so straylight is a particular concern for any space-based telescopes observing the CMB in the microwave. This is why Planck will be strategically positioned at L2.