Light is the fastest thing in our univers and we can not travel at light speed and also faster than light. But why can’t we travel faster than light? For this question you will know fast about light and her speed. At first Maxwell was tell as what’s the speed of light and the speed is 289792.458 km/s . You should realize it. Think there is 23.5 earth in one straight line and the light need only one second to cross this. Only one second! I think you realized that. The speed of light is depends on free space permeability and permittivity and it’s two have particular values in our univers.
The values for only our univers. It’s mean if there is another univers so the values of permeability and permittivity is deferent from our univers. Because the values of permeability and permittivity is contstan that’s why light speed is also contstan. Think you was standing beside a road and you on a torch 🔦. That’s mean light is training. Think I am run behind the light with 200000000 km/s speed so on this time I will measure the light speed 100000000 km/s right? ( 300000000-200000000= 100000000) but no einstein told us because light speed depends on free space permeability and permittivity and it’s two are contstan that’s why light speed is also contstan. It’s mean when am going behind the light when I also measure light speed 299792.458 km/s . It’s also mean on rest reference frame or motioning reference frame we measure the light speed same. Now the another question is why faster than light travel is impossible?
The fact is causality principal. Causality principal is in the universe we see all the information in light speed. It’s mean 1 light year ago super nova blast is we see now.( The distance of 1light year) Always we see first cause and then effect. If we travel faster than light speed we will see first effect and than cause. It’s the against of causality principal. It’s mean after fearing the bullet is hitting the target. So faster than light travel is reverse the time. Let’s think a graf on the graf if your speed is 0 so time is 100% for you but you have speed so time is gone to slow for you.
On this graf if you have the light speed so time will stop for you.
This graf is also tell us if you have faster than speed from light so time is gonna reverse for you.
It’s not only thing because we can’t go faster than light. If you giving speed a object so the mass of is continue to grow. It’s call relativistic mass . So giving a object light speed is impossible because if you want to give a electron light speed so will give that type of energy what is not in our univers. It’s mean only which object mass is 0 it can travel in light speed. You can only travel 99.999% speed of light. In our univers every object have there speed limit. So you can not give any thing the 100% of light speed. It’s reason of why can not you travel faster than light.
Writer: MD Amiyo Hasan Laskar.
Site: Crypto Question Festival.
Crypto Question Festival 
Leave a reply to শেষটায় মেসিরই সেরা। – Crypto Question Festival Cancel reply