What is meaning of darkness?

What is meaning of darkness?

darkness noun [U] (LACK OF LIGHT) the quality of being without light, or a situation in which there is little or no light: The city centre was plunged into darkness by the power cut.

Do shadows exist in darkness?

A shadow is a darkness cast by an object blocking the light. If there were no light, then there could be no shadows, for there would be no source from which the shadow may be cast. Unless there were some light, it cannot be blocked. A shadow is nothing more than the blocking of light.

Which element is hardest?

The hardest pure element is carbon in the form of a diamond. Diamond is not the hardest substance known to man. Some ceramics are harder, but they consist of multiple elements.

What element can kill you?

While other toxic metals such as mercury and arsenic kill through the interaction of the metal with the body, polonium kills by emitting radiation which shreds sensitive biomolecules, such as DNA, and kills cells.

What is the rarest element?

element astatine

What is the most toxic gas on earth?

Hydrogen sulfide - In high enough concentrations, inhaling this gas results in a coma and death. Arsine - This gas attacks the hemoglobin in your red blood cells. At concentrations of 250 ppm, Arsine is fatal. Chlorine - Inhalation of chlorine at concentrations in excess of 1000 ppm is usually fatal.

Is oxygen a poisonous gas?

Oxygen, the gas vital to sustain life, can also destroy it. It may become toxic at an elevated partial pressure, which may be the result of a rise in inspired oxygen concentration, an increase in environmental pressure or a combination of both.

What is the most dangerous animal?

Source: CNETSource: BBC News
AnimalHumans killed per year
2Humans (homicides only)50,000

What is the fastest snake in the world?

Black mambas

What is the deadliest snake in Australia?

  1. Eastern brown snake. (Pseudonaja textilis) ...
  2. Western brown snake. (Pseudonaja mengdeni) ...
  3. Mainland tiger snake. (Notechis scutatus) ...
  4. Inland taipan. (Oxyuranus microlepidotus) ...
  5. Coastal taipan. (Oxyuranus scutellatus) ...
  6. Mulga snake. (Pseudechis australis) ...
  7. Lowlands copperhead. (Austrelaps superbus) ...
  8. Small-eyed snake.