What is Circular: Definition and 1000 Discussions

A circular economy (also referred to as "circularity") is an economic system aimed at eliminating waste and the continual use of resources. Circular systems employ reuse, sharing, repair, refurbishment, remanufacturing and recycling to create a closed-loop system, minimising the use of resource inputs and the creation of waste, pollution and carbon emissions. The circular economy aims to keep products, equipment and infrastructure in use for longer, thus improving the productivity of these resources. Waste materials and energy should become input for other processes through waste valorization: either as a component or recovered resource for another industrial process or as regenerative resources for nature (e.g., compost). This regenerative approach is in contrast to the traditional linear economy, which has a "take, make, dispose" model of production.In recent years, concepts based on (re-)cycling resources are increasingly gaining importance. The most prominent among these concepts might be the circular economy, with its comprehensive support by China and the European Union. There is also a broad range of similar concepts or schools of thought, including cradle-to-cradle laws of ecology, looped and performance economy, regenerative design, industrial ecology, biomimicry, and the blue economy. These concepts seem intuitively to be more sustainable than the current linear economic system. The reduction of resource inputs into and waste and emission leakage out of the system reduces resource depletion and environmental pollution. However, these simple assumptions are not sufficient to deal with the involved systemic complexity and disregards potential trade-offs. For example, the social dimension of sustainability seems to be only marginally addressed in many publications on the Circular Economy, and some cases require different or additional strategies, such as purchasing new, more energy-efficient equipment.

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  1. K

    Physics help, circular motion and gravity

    anything is appreciated! 1. The mass of a star is 1.830×1031 kg and it performs one rotation in 37.30 days. Find its new period (in days) if the diameter suddenly shrinks to 0.850 times its present size. Assume a uniform mass distribution before and after. 2. A pulley with mass Mp and a...
  2. K

    How Do You Calculate Motion and Forces in Physics Problems?

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  3. Nugso

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  4. A

    Uniform Circular Motion Question (Mechanics/Physics I)

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  5. L

    Nonuniform Circular Motion - Find Maximum Total Acceleration

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  6. G

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  7. sa1988

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  8. A

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  9. S

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  10. B

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  11. S

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  12. P

    What is the radius of the de broglie circular orbit with n=1?

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  13. S

    Proportions in circular motion don't make sense.

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  14. S

    Centroid of a circular segment

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  15. S

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  16. C

    Non-uniform circular motion formula

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  17. Monsterboy

    Why are all the orbits elliptical and not circular?

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  18. P

    Some general formulae for circular orbits in symmetric spacetimes

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  19. R

    What is the reason for the rainbows to be circular?

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  20. A

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  21. B

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  22. M

    Determining the Handedness of Circular Polarized Waves

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  23. C

    Finding Apparent Weight with Uniform Circular Motion

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  24. D

    Period of circular orbit with in terms of varying speeds and radius.

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  25. S

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  26. S

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  27. F

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  28. H

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  29. Feodalherren

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  30. WannabeNewton

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  31. S

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  32. B

    What happens in non-uniform circular motion?

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  33. E

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  34. A

    Combinations/Permutations of Seating at a Circular Table

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  35. H

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  36. J

    Need Help with Newton's equation and circular motion

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  37. S

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  38. R

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  39. Q

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    I whirl a mass m attached to a wire with length L and diameter d around my head in the horizontal plane. The mass takes t seconds to move around a circle. How far do the atoms in the wire move apart, compared to their spacing at rest? Young's modulus is given. Okay, so Y = stress/strain...
  40. Q

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  41. S

    Circular Motion, Massless String - Swinging Rock

    1. Homework Statement : A rock of mass m is attached to a string of negligible mass and length L. The rock is released from rest from a horizontal position. When the rock is at point P, the string attached to the rock makes an angle θ with the horizontal. In terms of the quantities, m, L, θ and...
  42. C

    Shuttle moving in a circular orbit

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  43. M

    How does an object undergo circular motion on a non-circular trajectory?

    Hello, Forgive me if this question is stupid. How an object undergoes circular motion when the trajectory is not circular. I mean if it is not moving in a circle then why is it called circular motion. http://emuonline.emu.edu.tr/phys101/PhIch6pg3_files/image009.gif Let's suppose I am running...
  44. dexterdev

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  45. F

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  46. J

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  47. S

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  48. R

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  49. N

    Proving the Motion of Point P: Vertical or Elliptical?

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  50. V

    Buckling limit of a square plate over a circular hole

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