Activity for Fulli‭

Type	On...	Excerpt	Status	Date
Question	—	How can a space "radar" work? The Question about the blockade of en entire star system makes me wonder: How would, if possible, a space "radar" work? Or how would you scan for Ships further away than your Optical sensors can see. The big space makes is semi impossible to look for the reflected radar rays. 0-100 Eyeball also do... (more)	—	about 9 years ago
Question	—	How fast could a climatic change forced by a civilization happen? A Civilization with semi advanced Technology should be able to start climatic changes on a earth like Planet (same land mass to water surface ratio). What would the fastest way be and How? Some little restrictions: No radiation, no burning down of all the forests, no burning of resources at all... (more)	—	about 9 years ago
Question	—	How could a force field dome be realized in my city? In relation to this question, how could I create a force field dome over that city? Specifications of the city: 10 x 40 km on the surface 1 km in height has a city wall of 100 m all around the edge. What the force field needs to do: Hold against artillery barrages block line of sight in the ... (more)	—	over 9 years ago
Question	—	How would a force field dome over a city affect the weather? I put a force field dome over my city. How would that affect the weather inside the city, and outside it? Specification of the city: 10 × 40 km on the surface 1 km in height dome would be 2 to 3 km in height Specification of the area around that City: tundra-like area about 50 km to the south... (more)	—	over 9 years ago
Question	—	Is it possible to advertise on the moon? I remember a cartoon about some spy guy. In that cartoon they did mass media by projecting from the surface of the earth to the moon in the night sky. Would that technique be possible? Could an earth-like moon be used as a "blackboard" or is this scientifically not possible? How big would such a de... (more)	—	over 9 years ago
Question	—	What environment would make leaves light blue? What environmental effects (if any) would ever cause blue to be a colour that a plant would choose as an evolutionary advantage? Bonus: I'm looking for light blue plants as a preference. EDIT: Thank you for all the answers about how plants are capable of looking blue using Phycocyanin, or variants... (more)	—	over 9 years ago
Question	—	How could you dig a hole through the fluid mantle of a planet? The Question of the Tunnel through a Planet grinds my mind. How could you dig a Hole through the fluid mantle of a planet? Would your walls not constantly break and collapse on you after the 15-20 km of the crust? Would it be a straight, spiraled one or something totally different? (more)	—	over 9 years ago
Question	—	What effect would a radical gravity change have on plants and fungus? In relation to this question, what would plants do if they were taken from their environment to another gravity level, in particular zero g. For example would the daisy manage to grow higher because it doesn't need to make so much effort to hold its head up? Would its form change? What happens t... (more)	—	over 9 years ago
Question	—	What is the limiting factor for a plant's growth? This question is about big trees that can contain an entire city. So generally speaking: What limits a plant's size, anything from a tree to a flowering plant? What environment needs to exist for a daisy to become the size of a dinner table (for example)? For the purpose of this question you sho... (more)	—	over 9 years ago
Question	—	How could a Dyson Sphere be destroyed through natural causes? I would like to destroy a Dyson Sphere so it leaves big chunks of scrap metal with no habitable zones left, but still with enough structure to hold building-sized blocks. The destruction shouldn't be man made. Sphere Description (ordered from the sun to the outer layers): Habitable Zone: cities, ... (more)	—	over 9 years ago