Resonance

A Helmholtz resonator is a rigid container which has an opening to the air surrounding it. A common example of a Helmholtz resonator is a bottle because it has a set volume as well as having an opening which is open to the surrounding air. By considering the Helmholtz resonator as having a neck, such as the neck of a wine bottle, the dynamics of the system may be described. When energy is introduced near the opening of the bottle, for example blowing across it, some of the energy will vibrate…

Have you ever gone to the doctor and ended up needing to get an MRI? If you have, did you know what it was or what it was meant to do? If you knew what it was for, you probably didn’t know the science behind how it worked. MRI stands for magnetic resonance imaging. Well an MRI is used for taking pictures to diagnose you. It is used on your chest, abdomen and pelvis. So pregnant women doctors might do a body MRI to safely monitor the baby. The MRI has a strong magnetic field. Which can be…

the energy of a photon to be and the resonance condition to be , we get the equation which is the fundamental equation of electron spin resonance where we can find the microwave resonance frequency. When electromagnetic energy in the microwave range is applied, the magnetic field corresponds to value of approximately 0.35 T which is needed to gain useful ESR spectra. Energies in the radio range would need a magnetic field of approximately 0.7 T for resonance. Figure 2 gives us a glimpse of…

With this how does the search field get narrowed down, for space is rather large? Calculations for everything from mean motion resonances to resonant orbital geometry constraints, then take the planets mass and put it all together to eliminate locations that the planet could not be. Those eliminations help narrow down the areas of space that need to be considered based on where the…

The night of October 26th, the Concert Chorale, along with several other ensembles, performed at the Meet the Music Department Concert. During this event, the Chorale sang Barso Re, a Hindu piece written by A.R. Rahman and arranged by Ethan Sperry. The song was used in a film titled Guru, and if translated into english, “Barso Re” means “Let It Rain.” A.R. Rahman may also be credited as the writer of the song “Jai Ho,” a Hindu piece heard in the major motion picture, Slumdog Millionaire. While…

It was a particularly cold, frisky night in Saturn. We have been in the rings of Saturn on our enemies ship for god knows how long. Our commander, Cayde, at tower Earth sent the Fireteam to Saturn to capture the Taken King. The Taken King, was the biggest plague the system has ever seen. If the Fireteam shut down the Taken King, they ended all of the battle between the Taken and the Vanguards that took place all over the Solar System. It was the Hunter, Titan, and the Warlock. They were…

local extension and rarely by meta size (spread) outside the brain. The extraction of brain tumors and its analysis are demanding. In recent years, segmentation of brain tumors in magnetic resonance imaging (MRI) has become an emerging area of research in the field of the medical imaging system. Magnetic resonance imaging (MRI) is one of the best technologies to detect tumor in the brain. With the help of the MRI image, brain cancer…

This will result in a higher difference in resonance signals between different tissues, and hence the higher resolution MRI images (Hao, Ai et al. 2012). MRI can image tissues down to 10 μm resolution as opposed to 1-2 mm for other imaging systems such as PET as shown in Table 1. Therefore, MRI is…

especially tattoos. One writer says, “Permanent tattooing is the process of body modification by deposition of a pigment into the dermis” (Simunovic and Shinohara 525). In the past three decades, magnetic resonance imaging (MRI) has become increasingly popular in the medical field. Magnetic resonance imaging is a type of medical imaging that is non-invasive and safe in most cases. However, in some cases, patients with tattoos who have undergone MRI scans have experienced first and second degree…

Review of Stacking Interactions of Nucleobases: NMR Investigations by H. Sapper and W. Lohmann Introduction Nuclear magnetic resonance (NMR) spectroscopy is often a very useful tool to identify organic molecules based on the atomic nuclei interactions with their environment. Recent advances have made use of the technology in protein, nucleic acid, and complex natural products structure identification. [1, 2, 3] Its origins lie in the works of Felix Bloch and Edward Purcell, who used the…