ADITYA L1

Aditya-L1 Mission

Aditya L1 is the first space based Indian mission to study the Sun. The spacecraft will be placed in a halo orbit around the L1 point of the Sun-Earth system, which is about 1.5 million kms from the Earth. A satellite placed at the L1 point has the advantage of continuously viewing the Sun without any interferences. This will provide a greater advantage of observing the solar activities and its effect on space weather in real time. 

The Aditya-L1 mission,  India's first space based solar observatory. It was launched in September and reached its target orbit on January 6, 2024. The spacecraft is placed in a halo orbit around the Sun-Earth system's Lagrange point 1, which is about 1.5 million kilometers from Earth. 

Chandrayaan 3

 Proud to be Indian for all the great achievements in the Chandrayaan 3 project. 

how to open control center on iPhone with no home button.

Starting from iPhone X, Apple removed the home button. Also, the control Centre is not accessible by swiping from the bottom. You need to swipe down for the top right corner. To close Control Centre just swipe back up to push it off screen.

"askew" - an interesting word to search in google

 I just found an interesting fact I wanted to share. In google search if you type the word "askew" and hit enter, google will give you the meaning but the page will look slightly titled which is the meaning of the work.

EPPlus - null reference exception on accessing ExcelPackage object in C#

 Recently I was working on an issue for which I found a resolution, Wanted to share it here.

Issue: 

Using EPPlus package to manipulate an Excel file is throwing an error saying that the ExcelPackage object is null. While debugging when I hit the object it shows null. If I remove my cursor an hove back on it the object is loaded. This is happening with Excel files generated by code.

Resolution:  

The exception is caught and in the catch block, after a pause of 2 seconds, the ExcelPackage is called again which resolves successfully. This is just a work around for EPPlus version 4.5. I have seen that the issue was resolved in the later versions which are paid. Find the code snippet below.

try{

        ExcelPackage package = new ExcelPackage();

        var xlSheet = package.Workbook.Worksheets[1];

   }

catch(Exception e)

  {

        Thread.Sleep(2000);

        var xlSheet = package.Workbook.Worksheets[1];

 }

        

Function Keys enable/disable on HP Laptops

I got a HP Elitebook laptop recently and initially I found it difficult using the function keys.

There is an option to lock the function key and you can use the functions by simply pressing the keys. Here is how you can do it.

Hold the function key and press Shift key above the function key. If you see the light glowing on the fn key, You can hit the fn keys directly to use the functions. To turn of you can follow the same process.

Blank Chrome Icon on task bar

 A few days back chrome icon on my task bar started showing blank instead of chrome icon as in the screenshot below.

To restore the chrome Icon the you need to kill the explorer task and enable it. Find the steps below using windows command prompt.

1. Right click on the windows icon and hit on run

2. run this command to kill the explorer process

taskkill /f /im explorer.exe

3. To start explorer run the command below and you should see the chrome icon on the task bars as before.

explorer.exe