Answer / guest

objects in the universe from galaxies a million times
smaller than ours to the largest clusters of galaxies are
held together by a form of matter that is not what we are
made of and that gives off no light. This matter probably
consists of one or more as-yet-undiscovered elementary
particles, and aggregations of it produce the gravitational
pull leading to the formation of galaxies and large-scale
structures in the universe. At the same time these
particles may be streaming through our Earth-bound
laboratories.

how the aspirator pump works?

1 Answers   NTPC,

---

what is doppler effect?

1 Answers   Matrix,

---

what are black holes?

1 Answers   NTPC,

---

How to calculate an orbit at a given altitude?

0 Answers  

---

what is the difference between monochromatic and chromatic aberrations?

1 Answers  

---

what is difference between resolving power of telescope and microscope?

0 Answers  

---

How to caluculate the coefficient of restitution?

1 Answers  

---

what is astigmatism?

1 Answers  

---

What is the Casimir Effect?

2 Answers  

---

A wheel of perimetre 220cm rolls ona level road at a speed of 9 km per hr.how many revolutions does the wheel make per second?

1 Answers  

---

How did the Universe begin?

1 Answers  

---

What is gravity?

1 Answers  

---