Direction Definition and 999 Threads

One Direction, often shortened to 1D, are an English-Irish pop boy band formed in London, England in 2010. The group are composed of Niall Horan, Liam Payne, Harry Styles and Louis Tomlinson; former member Zayn Malik departed from the group in March 2015. The group signed with Simon Cowell's record label Syco Records after forming and finishing third in the seventh series of the British televised singing competition The X Factor in 2010.
Propelled to global success by social media, One Direction's five albums, Up All Night (2011), Take Me Home (2012), Midnight Memories (2013), Four (2014), and Made in the A.M. (2015), topped charts in most major markets, and generated hit singles including "What Makes You Beautiful" (their first number one on the UK Singles Chart, and the highest debut for a British act on the US Billboard Hot 100 since 1998), "Live While We're Young", "Best Song Ever", "Story of My Life" and "Drag Me Down". After the release of Four, One Direction became the first band in the US Billboard 200 history to have their first four albums debut at number one. Their third album, Midnight Memories, was the best-selling album worldwide of 2013.Considered teen idols, One Direction were often subject to fan hysteria. They embarked on four world tours, two of which were all-stadium. The band's Where We Are Tour, in support of Midnight Memories, was the highest-grossing concert tour in 2014, the highest-grossing tour by a vocal group in history, and the 15th highest-grossing concert tour of all time, grossing $290.2 million (unadjusted for inflation). The band went on hiatus in January 2016, allowing all members to pursue other projects.As of 2020, the band have sold a total of 70 million records worldwide, making them one of the best-selling boy bands of all time. The band have won nearly 200 awards, including seven Brit Awards, four MTV Video Music Awards, six Billboard Music Awards, seven American Music Awards (including Artist of the Year in 2014 and 2015), and 28 Teen Choice Awards. In 2013, they earned an estimated $75 million, becoming the second highest earning celebrity under 30 according to Forbes. As the world's best-selling artist of 2013, the group was named the Global Recording Artist of the Year by the International Federation of the Phonographic Industry. In 2014, Billboard named the band "Artist of the Year". Forbes ranked them as the fourth highest-earning celebrities in the world in 2015, and second in 2016.

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  1. S

    Invariance of direction of vorticity

    Homework Statement The vorticity vector ##\vec{\omega} = \text{curl}\ \vec{v}##, defined as usual by ##\omega^{2}=i_{{\vec{\omega}}}\text{vol}^{3}##, is ##\textit{not}## usually invariant since the flow need not conserve the volume form. The mass form, ##\rho\ \text{vol}^{3}##, however...
  2. U

    Force Problem: force direction and choice of sign for g

    Homework Statement The Force applied to an object is equal its mass times its acceleration Assume that the ball has a mass of 40g. What is the force due to gravity acting on the ball? Homework Equations F=ma The Attempt at a Solution F=(.04)(-9.81) I get a negative answer, does that mean...
  3. E

    Mesh Analysis w/ Supermesh and "different" current direction

    Homework Statement Find power absorbed by resistor, capacitor and inductor. Find the total complex power absorbed by all the loads.[/B] Homework Equations KVL/KCL The Attempt at a Solution I want to solve this using Mesh analysis. There is a supermesh where the 5A source is, so I start it...
  4. BiGyElLoWhAt

    Current flow direction in "infinite" cube of 1ohm resistors

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  5. Kyle Darden

    How to determine the direction of current

    Homework Statement A horizontal circular wire loop of radius 0.5 m lies in a plane perpendicular to a uniform magnetic field pointing from above into the plane of the loop, has a magnitude of 0.19 T. If in 0.15 s the wire is reshaped from a circle into a square, but remains in the same plane...
  6. H

    Direction of rotation of a direct current motor

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  7. C

    Understanding Strain in Different Directions: Is AD = AC cos theta?

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  8. Meerio

    B In what direction do gravitational waves get emitted?

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  9. G

    Find direction of acceleration from potential-energy funct.

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  10. E

    How far has the boat moved and in which direction?

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  11. Z

    Limit switches to control motor direction

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  12. sebastian tindall

    A question about how vector direction affects equations

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  13. moenste

    Find direction of current in a magnetic field

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  14. moenste

    The balance reading when direction of mag. field changes

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  15. moenste

    Magnetic field pattern in a hor. plane, wire force direction

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  16. K

    Direction of acceleration, vector quantity

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  17. C

    Strain in Different Directions: Understanding Tensile Forces on Cubes

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  18. Vitani11

    Direction of alpha particles/protons from isotope decay

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  19. tech99

    Can a sailing boat go faster than the wind when going in the downwind direction?

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  20. D

    Determine the direction of magnetic field from Maxwell eqs?

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  21. J

    Direction of current in RC parallel circut

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  22. Marcin H

    Direction of current flow in KCL/Node Voltage Confusion

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  23. P

    Which Rule is Correct for Determining the Direction of Lorentz Force?

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  24. szc

    Single Direction Applied Force Locking Mechanism

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  25. JulienB

    Direction of dipole moment in e-field of another dipole

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  26. kubassek

    Getting sailboat velocity from wind speed and direction

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  27. J

    MHB What is the Gradient of a Function at a Given Point?

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  28. C

    Buckling of beam in different direction

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  29. GeorgeDishman

    B Distribution and direction of Unruh radiation

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  30. jacquelineg

    Advice on Pursuing a Career in Physics After Graduating

    Hello all- I'm looking for some general advice and thought this would be a good forum. I fell in love with physics after my sophomore year of undergrad. As a Psychology major who hadn't even taken a math class since my junior year of high school, the Physics department cautioned me against...
  31. T

    Illustrating the Direction of a Current in a Magnetic Field

    This is the question: At a certain location in the Philippines, Earth’s magnetic field of 39 µT is horizontal and directed due north. Suppose the net field is zero exactly 8.0 cm above a long, straight, horizontal wire that carries a constant current. What are the magnitude and direction of the...
  32. UMath1

    Why is friction minimal in a non-ideal ball bounce situation?

    When a ball is bounced against a wall at an angle why is that the wall only applies a normal force perpendicular to the collision location? Shouldn't the force applied by the ball against the wall be along the line at which it travels, at an angle? Then by that logic, by Newton's 3rd Law...
  33. V

    B Are parallel vectors always in the same direction?

    I am just starting to learn about vectors and I have question regarding vectors and their parallel properties: Assume that we have two vectors A and B, and they are said to be parallel. We know that in order to be parallel the angle between the two vectors either have to be 0 or 180. However...
  34. gracy

    Vector question - North-east direction

    Homework Statement A particle undergoes three successive displacements given by ##S_1##=√2 m North- East, ##S_2##=2m due south and ##S_3##=4m 30 degree north of west , then find the magnitude of net displacement? Homework Equations ##S##= ##S_1## + ##S_2## + ##S_3## The Attempt at a Solution...
  35. S

    Engineering University student with no direction

    Hi, I've been lurking here for quite a bit for a while now (reading old threads, stickies, etc.). I figured it's time I finally make a PF account to join the community. A little about myself. I'm currently a 6yr student (I know...) at a medium size state university close to my home. I...
  36. K

    Magnetic field direction on Halbach array?

    Hi, hopefully someone here can help me! I'm interested in Halbach Arrays and specifically I want to make a circular array in which the field is amplified away from the array (as in above or below it), not to its inner diameter (or exterior circumference). Is this possible? On the web I've seen...
  37. C

    Why is the direction of shear stress important in pure shear stress?

    Homework Statement In my book, I was told that when an element is subjected to pure shear stress, equalibrium required that equal shear stress must be developed on four sides of the element...these stresses must be direct toward or away from opposite corners of element.. Homework EquationsThe...
  38. Lakshman Chaudhari

    Direction observed by fish when man flying air to water?

    what is the direction of velocity observed by fish when man flying from air to water?
  39. A

    Fin area and heat transfer direction

    So, i was studying some fin design in a heat transfer course , and then came the part where the efficiency is to be calculated, then i noticed that when he calculated the surface area and the sides of a rectangular fin weren't included, so i searched and i found out that it was neglected...
  40. R

    Why Does Heat Transfer Direction Differ in Triangular and Rectangular Fins?

    Homework Statement I'm unsure of what exactly is changing the heat transfer direction in the triangular fin. Homework Equations $$q_{x} = -kA(x)\frac{dT(x)}{dx} (1)$$ $$q_{x+dx} = -kA(x)\frac{dT(x)}{dx} - k\frac{d}{dx}[A(x)\frac{dT(x)}{dx}] (2)$$ $$dq_{conv} = h(x)dS(x)P[T(x) - T_{∞}] (3)$$...
  41. Erenjaeger

    Finding direction of force vector

    Homework Statement The magnitude of a force vector is 80.6 Newtons (N). The x component of this vector is directed along the +x axis and has a magnitude of 78.0 N. The y component points along the +y axis. (a) Find the angle between and the +x axis. (b) Find the component of along the +y...
  42. QuarkDecay

    B Doppler effect/ both moving same direction

    What happens if a source and the observer move at the same direction? Always hear how only one of them doesnot move, or when they move towards each other. For example. An ambulance moves towards direction A with Va. A biker moves towards direction A as well, with Vb. What happens to the...
  43. H

    I Understanding the Direction of 'r' Vector in Torque and Biot-Savart Law

    So I understand the with torque, T= r x F: r is a vector that points from axis to point of force, correct? I am confused about the direction of r is a couple of other circumstances, and I wanted to know if there is handy rule. For example a linear momentum, this diagram, does 'r' also point...
  44. kiwaho

    A What is the photon direction in Z-pinch

    In high energy Z-pinch, lots of X-ray emit. Which direction is the highest density of photon radiation?
  45. Zack K

    Change in direction affecting velocity

    I just have a simple question to ask people of physics since I keep on forgetting to ask my physics teacher. Does changing your direction while in motion affect your velocity? If so why? What forces cause it's velocity to decrease. Assuming that friction is present.(Also would it affect an...
  46. C

    Understanding Moment Direction: Analysis and Solution for Homework

    Homework Statement why does the moment -400Nm only act at region B and C? Why it doesn't act from A to C? http://imgur.com/a/5tfCg Homework Equations The Attempt at a Solution As we can see from figure, there's moment 400Nm on the beam at B at the top part and also the below part...
  47. kiwaho

    B What Happens to an Electron's Energy in a Decelerating Electric Field?

    If a accelerated electron 10keV fly through a decelerating electric field that is set by 10KV high voltage, then after exit, the electron all kinetic energy is lost and become 0 velocity. Of course, braking radiation will happen. My question are: 1. what is the direction of radiation photon...
  48. F

    Shearing Force Direction and Sign Convention

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  49. M

    Which direction for maximum signal on 3 antenna router?

    Purchased a Netgear R7000 Nighthawk router that has 3 antennas mounted on the back. Is the maximum signal strength in the direction formed by the plane of the 3 antennas (left to right) or perpendicular to that plane (front to back)?
  50. T

    Electronic NOT gate chip question

    Hi, Can current flow both ways through a NOT gate, or is the diagram I saw, much like the picture I drew here, just drawn the wrong way around? Anyway, say it was correct, so what does this mean? Because the chip itself (the not gate chip Vcc = 5V and Gnd) takes 5V between it and the chip...
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