Is it possible to create artificial gravity on a space station?

 Yes it is but it must be designed for it. The key of course is spinning to create artificial gravity. This was shown in 2001 a Space Odyssey. If you have the need for a large space station to house a lot of people it could be something like this.

There is little or no gravity in the center hub and ships can dock there if they match the spin. The outer portion has gravity due to the spin (centripetal force). This of course would require a lot of launches and a long time to build. They don’t say what the diameter is but it would have to be at least a couple of hundred meters to not have vertigo due to gravity differences at your head and feet I am told.

A simpler possibility for say 2 Starships going to Mars is a simple tether connecting the noses of the ships. It might look about like this.

With a 300 meter cable and a slow spin of 1.5 RPM you get Mars normal gravity. The issues with this is no other craft can dock most likely. However, the two ships could spin themselves up slowly with attitude thrusters. They just have to de-spin to do anything meaningful like a course correction or preparing to enter the atmosphere. You might be able to save mass with a 200 meter cable and a slightly faster spin.

Why are railway station names written on the yellow board?

 The railway station names are written on the yellow board due to below mentioned points.

• The yellow colour has highly visibility from far away distance to loco pilots to spot the railway station easily. The station names are clearly visible in both day and night and even in foggy weather situation during the winter season.
• The yellow colour better contrast with the black colour. The black letters written on the yellow board is easy to read from far away distance.

Moreover, the colour yellow is placed at third position among the seven primary colours, in terms of wavelength in the visibility spectrum. The more the wavelength of colour, the farthest it can be seen.

In terms of wavelength, the colour red tops the list but it is used to stop trains at signals. The red colour is not used on the station board because the lateral peripheral vision of yellow colour is 1.24 times higher than that of red colour.

Hence, due to above mentioned points and explanations, the railway station names are written on the yellow board in Indian Railways.

IMAGE: Google.

Which is the most luxurious railway station in India?

 The answer is One and Only Shri Mata Vaishno Devi Katra railway station.

Why ?

1. The new Katra railway station in Jammu and Kashmir is finally complete with world-class facilities and was inaugurated by Prime Minister Narendra Modi. Spread over an area of 83 hectares, the station has three platforms — each 550 meters long and big enough to accommodate trains with 26 compartments.

2. The facilities include smooth-running escalators, lifts and a fully air-conditioned hotel with a shopping lounge and a multi-cuisine food station.

3. The station has a huge parking lot that has been constructed to accommodate cars and passenger buses.

4. Here is a picture of the lounge area at the station.

5. The two-storey main building has two lifts, with the first floor comprising a guest house, a multi-cuisine restaurant and a shopping lounge run by the Indian Railways Catering and Tourism Corporation.

6. Pictured here is one of the rooms built for the comfort of waiting passengers at the Katra station.

7. Stunning entrance......!

8. Constructed at a cost Rs 1,050 crore, the 25 km-long railway line between Katra and Udhampur has 10 tunnels and 32 bridges.

These all things makes it Luxurious station.