Light Bulb Flicker When Turning On After Long Time Off.

Hello. I have question. I dont know if i have faulty wiring,bad installation or its bulb. When i have lights off long time and turn on ceiling lightning ( bulb halogen or fluorescent? ) , there is a for 2-3 second bulb dimm/flicker and its normal/fine. Happens only when lightning is off long time and i turn on.

When i turn off lights and turn on again its fine. That flicker/dimm happens only when lights are off long time.That happens for example if i have lights off 2-3 hours and turn on.Thx



Why it happens only after lights are off for long time?

Bulb looking like that here:

https://www.destinationlighting.com/images/products_zoom/150/17150~zoom.jpg







I have an expensive PC to plug in my house so i am worried. THx

 

That's normal for a compact fluorescent light.