What is Rays: Definition and 315 Discussions

The Tampa Bay Rays are an American professional baseball team based in St. Petersburg, Florida. The Rays compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. Since its inception, the team's home venue has been Tropicana Field.
Following nearly three decades of unsuccessfully trying to gain an expansion franchise or enticing existing teams to relocate to the Tampa Bay Area, an ownership group led by Vince Naimoli was approved on March 9, 1995. The Tampa Bay Devil Rays began play in the 1998 Major League Baseball season.
Their first decade of play, however, was marked by futility; they finished in last place in the AL East in all but the 2004 season, when they finished second to last. Following the 2007 season, Stuart Sternberg, who had purchased controlling interest in the team from Vince Naimoli two years earlier, changed the team's name from "Devil Rays" to "Rays", now meant to primarily refer to a burst of sunshine rather than a manta ray, though a manta ray logo remains on the uniform sleeves. The 2008 season saw the Tampa Bay Rays post their first winning season, their first AL East championship, and their first American League Pennant (defeating the rival Boston Red Sox in the ALCS), though they lost to the Philadelphia Phillies in that year's World Series. Since then, the Rays have played in the postseason five more times, winning the American League pennant again in 2020 and losing to the Los Angeles Dodgers in that year's World Series.
The Tampa Bay Rays' chief rivals are the Boston Red Sox and the New York Yankees. Regarding the former, there have been several notable on-field incidents. The Rays also have an intrastate interleague rivalry with the National League (NL)'s Miami Marlins (originally the Florida Marlins), whom they play in the Citrus Series.
Through 2020, the Rays' all-time record is 1,726-1,896 (.477).

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  1. F

    Energy of resulting Gamma Rays after particle annihilation

    Homework Statement An electron and a positron are moving side by side in the +x direction at 0.50c when they annihilate each other creating two gamma rays. What is the energy of each photon? Homework Equations (mc2 + K+) + (mc2 + K-) = E1 + E2 The Attempt at a Solution I solved...
  2. D

    Does skin perpendicular to sun’s rays burn faster than if not perpendicular?

    Does skin that is perpendicular to the sun’s rays burns faster than skin that is closer to parallel to the sun’s rays? I was certain that it does but a very smart friend/engineer is certain that it doesn’t and was incredulous that I thought it did. I really would like to know the physics...
  3. R

    Cosmic rays - minimum ionizing particles ?

    Hello all, i am having a few problems simulating cosmic rays with a silicon CCD detector, mainly because my knowledge on particle physics is quite poor. I am simulating primary cosmic rays, which predominantly consist of single protons and alpha particles. I am treating the protons...
  4. N

    Are any Cosmic Rays antimatter

    In Kip Thorne's BLACK HOLES AND TIME WARPS,1993, he mentioned on page 173 that some cosmic rays particles are made of antimatter..and this was discovered by Carl Anderson at Caltech...seems like in the early 1930's... I could not find anything about antimatter Cosmic Rays in Wikipedia...
  5. Mentallic

    Medical UV Rays & Eye Health - Is Tanning Safe?

    It's simply common sense that looking directly into the sun is a bad thing, but what about with your eyes shut? I'm unsure if the UV rays can penetrate the eyelid, or at least if they can, if a significant percentage of the rays get through. Is it a factor to consider when tanning for over an...
  6. M

    Parallel light rays refraction by glass hemisphere problem

    Homework Statement Parallel light rays travel from air towards a glass hemisphere with radius R and index of refraction ng > nair. A top view is shown in the figure. http://img8.imageshack.us/img8/6380/parallellightrays.jpg (a) Determine where the light rays come to a focus relative to the...
  7. E

    Equation of reflecting plane when incoming and reflected rays are known

    Homework Statement A light ray with direction (1, 2, -2) passes through the point (-1, -3, 5) and is reflected farther away on a plane. The reflected ray has the direction (3, 0, 4) and passes through the point (4, 1, 5). Determine the equation for the plane which reflects the ray. The...
  8. N

    Solve Gamma Ray Scattering from 198Au Incident on Al Slab

    Homework Statement A gamma ray from 198Au incident normally on a thick aluminum slab travels 1.45 cm before it undergoes a Compton scattering. Calculate the range of angles through which the gamma could scatter and still have at least a 10% probability of re-emerging from the incident slab...
  9. C

    Supernova's Gamma Rays and Comets

    Hi guys, me again, with two questions. Just saw a documentation about supernova, when supernova happens, a huge amount of gamma ray is emitted since it is vacuum in space, why wouldn't the gamma ray hit us? Even if its far and takes a few thousand years for it to reach us, it would eventually...
  10. 1

    Gamma Ray Speed: How Fast Do They Travel?

    Does anyone know the speed that gamma rays travel, as a speed or in proportion to the speed of light. Thanks
  11. D

    LHC vs Cosmic Rays: What's the Difference?

    Short question. I know that COLLIDING beams are much more effective than when moving particle hits a target in observers reference frame. That is why they make a collider. However, when Oh My God particles are observed they actually hit something that something does not move. So, when...
  12. S

    Light rays in concave lens,moon and eclipses?

    Hello everyone, Quick questions What happens to the light ray that passes through the mid point of the lens(dotted line). Does it go straight or diverge? Is moon concave? If the light passes right through the midpoint travel straight wouldn't the umbra have some light in the...
  13. A

    Black vs white vs red with relation to UV rays

    which color is better at blocking UV rays? my take on it is this analogy: you have a room with one window, cover it with a fabric curtain that is black the room becomes very dark. cover it with that same curtain except white and the room is somewhat brighter. less light = less UV rays a...
  14. R

    Exploring Breit-Wigner Profile for Gamma Rays

    Hello PF members, I curious to know some basic idea..why the line shape of nuclear decay is displayed as a Breit-Wigner (BW) profile (x-axis as energy and y-axis as intensity) ??.. or any \gamma ray is often shown as a BW profile?? thanks for your reply.
  15. V

    Depicting Vectors as Path-Dependent Rays

    This is a physics and math problem The representation of a vector as a straight ray is problematic Imagine an arc of a circle formed as a result of uniform circular motion.In time Δt, it traces out an arc of length vΔθ such that vΔθ/Δt =vω is the acceleration. v=rω comes from the fact that...
  16. R

    Hypernova release two huge jets of gamma rays

    I know that a Hypernova release two huge jets of gamma rays, but I'm not real sure on how they are formed. Also it was mentioned that by following the burst of gamma rays, we're looking back in time. How is this actually possible. I have a shaky grasp on the idea.
  17. J

    Solving Delta Ray Problem - N=epsilon(1/E1 - 1/Emax)

    Im trying to find the number of delta rays though a material and am having some trouble with the units, can anyone help? The number of delta rays through a material is given by N=epsilon(1/E1 - 1/Emax), where epsilon=[2*Pi*A^2*e^4*ne*x]/[m*c^2], where A is unitless, [ne]=cm^-3, and the...
  18. E

    Emission of Gamma and Beta rays : Experimental Problem

    Hi there! The experiment: I'm counting Gamma and beta rays emitted from gamma and beta cylindrical sources, for counting I'm using a simple GM counter, which has nearly the same cylindrical shape (i mean diameter). As we all know this are electromagnetic emissions, so they distance must...
  19. V

    Can You See Color in Complete Darkness Due to Reflection?

    Assume I am standing in a desert at night (It's pitch dark). I have an opaque white object in front of me inclined at 45 degrees (see diagram). I now turn on a point light source next to me. http://img199.imageshack.us/img199/8945/lightt.jpg When I imagine the scene I feel I will be able to...
  20. K

    Attenuation of Gamma Rays

    I need to know the practical applications of the absorption of gamma rays in materials.
  21. fluidistic

    A question about energetic protons (cosmic rays)

    I've read that some protons in the Universe can have an energy of about 10^{20}eV, or in English, about a well-hit tennis ball. (The cosmic rays). Is it possible for these rays to reach our brain? Or more precisely, what would happen if one gets hit by such an energetic particle? P.S.: I...
  22. M

    High Energy Gamma Rays: Interaction w/ Matter

    Is there any on-line reference which describes the interaction of high energy (> 100 Mev) gamma rays with matter. These are gamma rays from gamma ray bursts, etc. in contrast to low energy from nuclear radiation.
  23. E

    Understanding Weinberg's Symmetries and Rays

    Hello, I am reading Weinberg's book and in the part on symmetries he speaks about rays, and says basically that 2 vectors U,V which are on the same ray can only differ by a phase factor \phi, so that U=e^{i\phi}V. Is "ray" meaning "direction" here ? Can I rephrase it and say that 2...
  24. G

    Cosmic Rays passing through a magnetic field

    Assume that it hits the Galactic magnetic field at an angle of 45o, i.e. such that the components of its momentum parallel and perpendicular to the magnetic field are equal. What is its cyclotron radius? How long does it take to execute one cyclotron orbit? W ealso, know velocity From part...
  25. H

    Do cosmic rays have any role in our weather?

    Dose the cosmic rays have any roll in our weather This question hits me yesterday when I was studying the electric charge and its roll in the weather , so dose the cosmic rays have any roll or its roll is just negligible…. when they hit our atmosphere
  26. N

    Is Hydrogen Gas Transparent to Gamma Rays? And What About Xenon Gas?

    I remember reading before that hydrogen gas is "transparent" to gamma rays. What does this mean? I know it has something to do with the gamma rays not heating the hydrogen. Also, would Xenon gas be transparent to gamma rays?
  27. A

    Destructive interference of direct and reflected rays

    QUESTION: Astronomers observed the interference between a radio wave arriving at their antenna directly from the Sun, and on a path involving reflection from the surface of the sea. (http://i62.photobucket.com/albums/h101/kaikibana/problem1.jpg) Assume that the radio waves have a frequency...
  28. M

    Geometric optics - why pinhole bends rays like lens

    We were discussing in an https://www.physicsforums.com/showthread.php?t=284322" that pinholes work like lenses, in that they form inverted real images. The other day, a friend told me, that pinholes even do bend the light rays like a lens do. I can - as being nearsighted - actually use a pinhole...
  29. T

    Ultraviolet Rays - Need Resource

    I am a new product development engineer and am working on figuring out a UV sanitization product. Do you know of a good resource to understand UV rays, its properties, using UV, etc.? I am not looking for detailed math models and analysis, but rather, a resource that will help me...
  30. Lisa!

    Origin of Characteristic X Rays: How Do Atoms Produce Them?

    I know the process of their production, now I want to know what's their origin? How does an atom produce them? PS:Donno whether it's the right forum to ask this question or not, so feel free to move it to the right place!:smile:
  31. H

    Galactic cosmic rays and our world.

    Recently on nasa's site: http://science.nasa.gov/headlines/y2008/19nov_cosmicrays.htm My question is...has there been any studies since 2004 to show the link between galactic cosmic rays, and cloud formation, and/or changes in cloud forming bacteria and/or the effect these have on the...
  32. H

    Semi circular prism and light rays

    Homework Statement So anyway in the diagram of my book there is a ray hitting the centre in the flat part of a semi circular prism. The question in the book states "Ignoring partial reflection, we know that each ray will pass through the flat surface and then pass through the curved surface...
  33. S

    How Many Teslas Are Needed to Deflect Cosmic Rays at Near Light Speed?

    I am trying to calculate the strength of the magnetic field ( in teslas ) that would be needed to deflect cosmic rays going about 99% the speed of light. using the lorents force http://en.wikipedia.org/wiki/Lorentz_force I replaced force with mass times acceleration I canceled...
  34. C

    Problems understanding headings for 3d rays

    Im having problems understanding headings for 3d rays. I mean with 2D you can have an object at (2,3) with a heading of 83 degrees. But in 3d you can have an object at (2,3,3) but how can you describe its heading, do you need two separate headings for the two planes, how does this work. Thanks...
  35. edward

    Can Scotch Tape Really Produce X-Rays?

    http://www.nytimes.com/2008/10/28/science/28xray.html?ref=science I don't know why but I found this to be amusing. It sounds like something from the Onion, or our own Turnip...hey whatever happened to the Turnip thread.
  36. C

    What Damage Can Infrared Rays, Radar Waves, FM Waves, etc. Do To The Body?

    What damage to the body can infrared rays, radar waves, FM waves, TV waves, "shortwav What damage to the body can infrared rays, radar waves, FM waves, TV waves, "shortwave" waves, and AM waves do? I have to do a physics project on causes of cancer, based on a physics standpoint. I have an...
  37. E

    What's the difference between gamma rays and x rays?

    what's the difference between gamma rays and x rays?
  38. Q

    What Is the Correct Slit Width for X-Ray Diffraction with a 10A Wavelength?

    Problem: Diffraction of X rays has been observed when a beam strikes an extremely fine slit. What must be the width if the slit if X rays of wavelength 10A are to display a diffraction pattern with a central beam of angular width 0.1? I used Bragg's equation to obtain...
  39. S

    Interference in light rays due to phase difference

    Homework Statement let there be three points: A, B, and D. Light of wavelength 400 m is emitted from the source at A to the destination D, and also from B to D. Line segment AD is 100 m longer than BD. The starting phase of the light at A is pi/2 radians ahead of B. At point D, what is the...
  40. wolram

    What is the outer source of anomalous cosmic rays?

    http://www.sciencedaily.com/releases/2002/10/021031071017.htm ScienceDaily (Oct. 31, 2002) — WASHINGTON - Researchers have found that a portion of anomalous cosmic rays -- charged particles accelerated to enormous energies by the solar wind -- results from interactions with dust grains from a...
  41. G

    What nuclear reactions are attributed to cosmic rays?

    http://en.wikipedia.org/wiki/Cosmic_ray I have a little bit of trouble writing an essay that relies on background knowledge of galactic cosmic rays. I found in textbooks solid writing about the history of discovery and composition, etc. I can not find simple exemplary nuclear reactions...
  42. N

    Do sound waves and light rays interact?

    Homework Statement see topic title Homework Equations I think that sound waves are vibrations of particles in a medium. The vibrations continue until the energy is gone. Sound seems to need a medium to travel through. Light can travel in a vacuum. your eye sees it from a source...
  43. M

    What is the significance of measuring attenuation in gamma rays?

    Hello everybody, actually yesterday i read about an experiment "ATTENUATION OF GAMMA RAYS". can anybody tell me what is meanning of word ATTENUATION.And why we are measuring it? i.e. what is the sigificance of measuring it?
  44. U

    Which is the densest star and how much does it bend light rays?

    Can someone tell me how much does a light ray bend when it passes over the surface of the densest star known? Is it like 1 degree, or more like 30 degrees? Please leave out black holes, this question is about normal stars, the densest one that is known. Is Sirius the densest normal star...
  45. T

    Self-Reproducing Rays in a symmetric Resonator

    Homework Statement Self-Reproducing Rays in a symmetric Resonator. Consider a symmetric resonator using two concave mirrors of radii R separated by a distance d=3|R|/2. After how many round trips through the resonator will a ray retrace its path? Homework Equations The Attempt at...
  46. C

    Atomic X and Gamma Rays: Physical Process

    What is the physical process common to both the emissions of atomic x rays and nuclear gamma rays? is it photoelectric.. or the inverse.
  47. A

    Questions on super gamama rays

    A person being exposed to radiation (restricted to gamma) can have a time dependent effects. One can die in a year, months, or even days depending on the dose. Is it possible that gammas can kill a person almost instantly?
  48. B

    How do concave mirrors form different types of images?

    hey guys i really need help with these problems.I am not good with physics at all, i just need this to graduate . I really don't understand it and my teacher isn't much help. If anyone can help me out with this i would really appericiate it. Thank you. 1.Why are parallel light rays used to...
  49. B

    How Do Light Rays and Mirror Equations Affect Image Formation?

    hey guys i really need help with these problems.I am not good with physics at all, i just need this to graduate . I really don't understand it and my teacher isn't much help. If anyone can help me out with this i would really appericiate it. Thank you. 1.Why are parallel light rays used to...
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