What causes headaches during pregnancy? During the first trimester, your body experiences a surge of hormones and an increase in blood volume. These two changes can cause more frequent headaches. These headaches may be further aggravated by stress, poor posture or changes in your vision. Other causes of headaches during pregnancy may involve one or more of the following: Lack of sleep.
Lucite, also known as acrylic, Plexiglas and Perspex, is the synthetic polymer polymethyl methacrylate. In essence, it is plastic, but with advantages... Acrylic Vs. Plexi Glass Acrylic and Plexiglass are often used interchangeably in product literature concerning sheet plastic.
Plexiglas is often chosen as an replacement material to mineral glass (also called flat glass, Borosilicate glass or Echtglas in German). PlexiglasÂ© (which is a brand name for acrylic) and mineral glass are both transparent building materials. Differences in the properties of the two materials include: Acrylic glass transmits more light than glass. Up to 92% of visible light is transmitted through acrylic.